// /*=====================================================================================================*/
// /*=====================================================================================================*/
// #include "stm32f4_system.h"
// #include "stm32f4_sdio.h"
// /*=====================================================================================================*/
// /*=====================================================================================================*/
// #define SDIO_STATIC_FLAGS               ((u32)0x000005FF)
// #define SDIO_CMD0TIMEOUT                ((u32)0x00010000)

// #define SD_OCR_ADDR_OUT_OF_RANGE        ((u32)0x80000000)
// #define SD_OCR_ADDR_MISALIGNED          ((u32)0x40000000)
// #define SD_OCR_BLOCK_LEN_ERR            ((u32)0x20000000)
// #define SD_OCR_ERASE_SEQ_ERR            ((u32)0x10000000)
// #define SD_OCR_BAD_ERASE_PARAM          ((u32)0x08000000)
// #define SD_OCR_WRITE_PROT_VIOLATION     ((u32)0x04000000)
// #define SD_OCR_LOCK_UNLOCK_FAILED       ((u32)0x01000000)
// #define SD_OCR_COM_CRC_FAILED           ((u32)0x00800000)
// #define SD_OCR_ILLEGAL_CMD              ((u32)0x00400000)
// #define SD_OCR_CARD_ECC_FAILED          ((u32)0x00200000)
// #define SD_OCR_CC_ERROR                 ((u32)0x00100000)
// #define SD_OCR_GENERAL_UNKNOWN_ERROR    ((u32)0x00080000)
// #define SD_OCR_STREAM_READ_UNDERRUN     ((u32)0x00040000)
// #define SD_OCR_STREAM_WRITE_OVERRUN     ((u32)0x00020000)
// #define SD_OCR_CID_CSD_OVERWRIETE       ((u32)0x00010000)
// #define SD_OCR_WP_ERASE_SKIP            ((u32)0x00008000)
// #define SD_OCR_CARD_ECC_DISABLED        ((u32)0x00004000)
// #define SD_OCR_ERASE_RESET              ((u32)0x00002000)
// #define SD_OCR_AKE_SEQ_ERROR            ((u32)0x00000008)
// #define SD_OCR_ERRORBITS                ((u32)0xFDFFE008)

// #define SD_R6_GENERAL_UNKNOWN_ERROR     ((u32)0x00002000)
// #define SD_R6_ILLEGAL_CMD               ((u32)0x00004000)
// #define SD_R6_COM_CRC_FAILED            ((u32)0x00008000)

// #define SD_VOLTAGE_WINDOW_SD            ((u32)0x80100000)
// #define SD_HIGH_CAPACITY                ((u32)0x40000000)
// #define SD_STD_CAPACITY                 ((u32)0x00000000)
// #define SD_CHECK_PATTERN                ((u32)0x000001AA)

// #define SD_MAX_VOLT_TRIAL               ((u32)0x0000FFFF)
// #define SD_ALLZERO                      ((u32)0x00000000)

// #define SD_WIDE_BUS_SUPPORT             ((u32)0x00040000)
// #define SD_SINGLE_BUS_SUPPORT           ((u32)0x00010000)
// #define SD_CARD_LOCKED                  ((u32)0x02000000)

// #define SD_DATATIMEOUT                  ((u32)0xFFFFFFFF)
// #define SD_0TO7BITS                     ((u32)0x000000FF)
// #define SD_8TO15BITS                    ((u32)0x0000FF00)
// #define SD_16TO23BITS                   ((u32)0x00FF0000)
// #define SD_24TO31BITS                   ((u32)0xFF000000)
// #define SD_MAX_DATA_LENGTH              ((u32)0x01FFFFFF)

// #define SD_HALFFIFO                     ((u32)0x00000008)
// #define SD_HALFFIFOBYTES                ((u32)0x00000020)

// #define SD_CCCC_LOCK_UNLOCK             ((u32)0x00000080)
// #define SD_CCCC_WRITE_PROT              ((u32)0x00000040)
// #define SD_CCCC_ERASE                   ((u32)0x00000020)

// #define SDIO_SEND_IF_COND               ((u32)0x00000008)

// static u32 CardType =  SDIO_STD_CAPACITY_SD_CARD_V1_1;
// static u32 CSD_Tab[4], CID_Tab[4], RCA = 0;
// static u8 SDSTATUS_Tab[16];
// vu32 StopCondition = 0;
// volatile SD_Error TransferError = SD_OK;
// vu32 TransferEnd = 0, DMAEndOfTransfer = 0;
// SD_CardInfo SDCardInfo;

// SDIO_InitTypeDef SDIO_InitStruct;
// SDIO_CmdInitTypeDef SDIO_CmdInitStruct;
// SDIO_DataInitTypeDef SDIO_DataInitStruct;

// static SD_Error CmdError(void);
// static SD_Error CmdResp1Error(u8 cmd);
// static SD_Error CmdResp7Error(void);
// static SD_Error CmdResp3Error(void);
// static SD_Error CmdResp2Error(void);
// static SD_Error CmdResp6Error(u8 cmd, u16 *prca);
// static SD_Error SDEnWideBus(FunctionalState NewState);
// static SD_Error IsCardProgramming(u8 *pstatus);
// static SD_Error FindSCR(u16 rca, u32 *pscr);
// u8 convert_from_bytes_to_power_of_two(u16 NumberOfBytes);
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// SD_Error SD_Init( void )
// {
// 	GPIO_InitTypeDef  GPIO_InitStruct;
// 	volatile SD_Error ErrSta = SD_OK;

// 	RCC_AHB1PeriphClockCmd(SD_SDIO_DMA_CLK, ENABLE);  
// 	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD, ENABLE);
// 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_SDIO, ENABLE);

// 	GPIO_PinAFConfig(GPIOC, GPIO_PinSource8, GPIO_AF_SDIO);
// 	GPIO_PinAFConfig(GPIOC, GPIO_PinSource9, GPIO_AF_SDIO);
// 	GPIO_PinAFConfig(GPIOC, GPIO_PinSource10, GPIO_AF_SDIO);
// 	GPIO_PinAFConfig(GPIOC, GPIO_PinSource11, GPIO_AF_SDIO);
// 	GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_SDIO);
// 	GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_SDIO);

// 	/* Configure PC.08, PC.09, PC.10, PC.11 pins: D0, D1, D2, D3 pins */
// 	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
// 	GPIO_InitStruct.GPIO_Speed = GPIO_Speed_25MHz;
// 	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
// 	GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
// 	GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
// 	GPIO_Init(GPIOC, &GPIO_InitStruct);
// 	/* Configure PD.02 CMD line */
// 	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_2;
// 	GPIO_Init(GPIOD, &GPIO_InitStruct);
// 	/* Configure PC.12 pin: CLK pin */
// 	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_12;
// 	GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
// 	GPIO_Init(GPIOC, &GPIO_InitStruct);

// 	SDIO_DeInit();

// 	ErrSta = SD_PowerON();
// 	/* CMD Response TimeOut (wait for CMDSENT flag) */
// 	if(ErrSta != SD_OK)
// 		return(ErrSta);

// 	ErrSta = SD_InitializeCards();
// 	/* CMD Response TimeOut (wait for CMDSENT flag) */
// 	if(ErrSta != SD_OK)
// 		return(ErrSta);

// 	/*!< Configure the SDIO peripheral */
// 	/*!< SDIO_CK = SDIOCLK / (SDIO_TRANSFER_CLK_DIV + 2) */
// 	/*!< on STM32F4xx devices, SDIOCLK is fixed to 48MHz */
// 	SDIO_InitStruct.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
// 	SDIO_InitStruct.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
// 	SDIO_InitStruct.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
// 	SDIO_InitStruct.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
// 	SDIO_InitStruct.SDIO_BusWide = SDIO_BusWide_1b;
// 	SDIO_InitStruct.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
// 	SDIO_Init(&SDIO_InitStruct);

// 	/*----------------- Read CSD/CID MSD registers ------------------*/
// 	ErrSta = SD_GetCardInfo(&SDCardInfo);
// 	if(ErrSta == SD_OK)
// 		/*----------------- Select Card --------------------------------*/
// 		ErrSta = SD_SelectDeselect((u32)(SDCardInfo.RCA << 16));
// 	if(ErrSta == SD_OK)
// 		ErrSta = SD_EnableWideBusOperation(SDIO_BusWide_4b);

// 	return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// SDTransferState SD_GetStatus(void)
// {
//   SDCardState cardstate =  SD_CARD_TRANSFER;

//   cardstate = SD_GetState();
//   
//   if (cardstate == SD_CARD_TRANSFER)
//   {
//     return(SD_TRANSFER_OK);
//   }
//   else if(cardstate == SD_CARD_ERROR)
//   {
//     return (SD_TRANSFER_ERROR);
//   }
//   else
//   {
//     return(SD_TRANSFER_BUSY);
//   }
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// SDCardState SD_GetState(void)
// {
//   u32 resp1 = 0;
//   
//   if(SD_Detect()== SD_PRESENT)
//   {
//     if (SD_SendStatus(&resp1) != SD_OK)
//     {
//       return SD_CARD_ERROR;
//     }
//     else
//     {
//       return (SDCardState)((resp1 >> 9) & 0x0F);
//     }
//   }
//   else
//   {
//     return SD_CARD_ERROR;
//   }
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// u8 SD_Detect(void)
// {
//   vu8 status = SD_PRESENT;

// //   /*!< Check GPIO to detect SD */
// //   if (GPIO_ReadInputDataBit(SD_DETECT_GPIO_PORT, SD_DETECT_PIN) != Bit_RESET)
// //   {
// //     status = SD_NOT_PRESENT;
// //   }
//   return status;
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : SD_PowerON
// **功能 : 
// **輸入 : None
// **輸出 : ErrSta
// **使用 : ErrSta = SD_PowerON()
// **=====================================================================================================*/
// /*=====================================================================================================*/
// SD_Error SD_PowerON( void )
// {
// 	u32 response = 0;
// 	u32 count = 0;
// 	u32 validvoltage = 0;
// 	u32 SDType = SD_STD_CAPACITY;
// 	volatile SD_Error ErrSta = SD_OK;

// 	SDIO_InitStruct.SDIO_ClockDiv = SDIO_INIT_CLK_DIV;
// 	SDIO_InitStruct.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
// 	SDIO_InitStruct.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
// 	SDIO_InitStruct.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
// 	SDIO_InitStruct.SDIO_BusWide = SDIO_BusWide_1b;
// 	SDIO_InitStruct.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
// 	SDIO_Init(&SDIO_InitStruct);

// 	SDIO_SetPowerState(SDIO_PowerState_ON);

// 	SDIO_ClockCmd(ENABLE);

// 	SDIO_CmdInitStruct.SDIO_Argument = 0x00;
// 	SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_GO_IDLE_STATE;
// 	SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_No;
// 	SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
// 	SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
// 	SDIO_SendCommand(&SDIO_CmdInitStruct);

// 	ErrSta = CmdError();
// 	/* CMD Response TimeOut (wait for CMDSENT flag) */
// 	if(ErrSta != SD_OK)
// 		return (ErrSta);

// 	/*!< CMD8: SEND_IF_COND ----------------------------------------------------*/
// 	/*!< Send CMD8 to verify SD card interface operating condition */
// 	/*!< Argument: - [31:12]: Reserved (shall be set to '0')
// 	- [11:8]: Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)
// 	- [7:0]: Check Pattern (recommended 0xAA) */
// 	/*!< CMD Response: R7 */
// 	SDIO_CmdInitStruct.SDIO_Argument = SD_CHECK_PATTERN;
// 	SDIO_CmdInitStruct.SDIO_CmdIndex = SDIO_SEND_IF_COND;
// 	SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
// 	SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
// 	SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
// 	SDIO_SendCommand(&SDIO_CmdInitStruct);

// 	ErrSta = CmdResp7Error();
// 	if(ErrSta == SD_OK) {
// 		CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; /* SD Card 2.0 */
// 		SDType = SD_HIGH_CAPACITY;
// 	}
// 	else {
// 		/* CMD55 */
// 		SDIO_CmdInitStruct.SDIO_Argument = 0x00;
// 		SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_APP_CMD;
// 		SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
// 		SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
// 		SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
// 		SDIO_SendCommand(&SDIO_CmdInitStruct);
// 		ErrSta = CmdResp1Error(SD_CMD_APP_CMD);
// 	}
// 	/* CMD55 */
// 	SDIO_CmdInitStruct.SDIO_Argument = 0x00;
// 	SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_APP_CMD;
// 	SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
// 	SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
// 	SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
// 	SDIO_SendCommand(&SDIO_CmdInitStruct);

// 	ErrSta = CmdResp1Error(SD_CMD_APP_CMD);
// 	/* If ErrSta is Command TimeOut, it is a MMC card */
// 	/* If ErrSta is SD_OK it is a SD card: SD card 2.0 (voltage range mismatch) or SD card 1.x */
// 	if(ErrSta == SD_OK) {
// 		/* SD CARD */
// 		/* Send ACMD41 SD_APP_OP_COND with Argument 0x80100000 */
// 		while((!validvoltage) && (count < SD_MAX_VOLT_TRIAL)) {
// 			/* SEND CMD55 APP_CMD with RCA as 0 */
// 			SDIO_CmdInitStruct.SDIO_Argument = 0x00;
// 			SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_APP_CMD;
// 			SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
// 			SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
// 			SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
// 			SDIO_SendCommand(&SDIO_CmdInitStruct);

// 			ErrSta = CmdResp1Error(SD_CMD_APP_CMD);
// 			if(ErrSta != SD_OK)
// 				return(ErrSta);

// 			SDIO_CmdInitStruct.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;
// 			SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SD_APP_OP_COND;
// 			SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
// 			SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
// 			SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
// 			SDIO_SendCommand(&SDIO_CmdInitStruct);

// 			ErrSta = CmdResp3Error();
// 			if(ErrSta != SD_OK)
// 				return(ErrSta);

// 			response = SDIO_GetResponse(SDIO_RESP1);
// 			validvoltage = (((response >> 31) == 1) ? 1 : 0);
// 			count++;
// 		}
// 		if (count >= SD_MAX_VOLT_TRIAL) {
// 			ErrSta = SD_INVALID_VOLTRANGE;
// 			return(ErrSta);
// 		}
// 		if(response &= SD_HIGH_CAPACITY)
// 			CardType = SDIO_HIGH_CAPACITY_SD_CARD;
// 	}

// 	return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : SD_PowerOFF
// **功能 : 
// **輸入 : None
// **輸出 : ErrSta
// **使用 : ErrSta = SD_PowerOFF()
// **=====================================================================================================*/
// /*=====================================================================================================*/
// SD_Error SD_PowerOFF( void )
// {
// 	SD_Error ErrSta = SD_OK;

// 	/*!< Set Power State to OFF */
// 	SDIO_SetPowerState(SDIO_PowerState_OFF);

// 	return (ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Intialises all cards or single card as the case may be Card(s) come 
//   *         into standby state.
//   * @param  None
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_InitializeCards(void)
// {
//   SD_Error ErrSta = SD_OK;
//   u16 rca = 0x01;

//   if (SDIO_GetPowerState() == SDIO_PowerState_OFF)
//   {
//     ErrSta = SD_REQUEST_NOT_APPLICABLE;
//     return(ErrSta);
//   }

//   if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
//   {
//     /*!< Send CMD2 ALL_SEND_CID */
//     SDIO_CmdInitStruct.SDIO_Argument = 0x0;
//     SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_ALL_SEND_CID;
//     SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Long;
//     SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//     SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//     SDIO_SendCommand(&SDIO_CmdInitStruct);

//     ErrSta = CmdResp2Error();

//     if (SD_OK != ErrSta)
//     {
//       return(ErrSta);
//     }

//     CID_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
//     CID_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
//     CID_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
//     CID_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
//   }
//   if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) ||  (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) ||  (SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType)
//       ||  (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
//   {
//     /*!< Send CMD3 SET_REL_ADDR with argument 0 */
//     /*!< SD Card publishes its RCA. */
//     SDIO_CmdInitStruct.SDIO_Argument = 0x00;
//     SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR;
//     SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//     SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//     SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//     SDIO_SendCommand(&SDIO_CmdInitStruct);

//     ErrSta = CmdResp6Error(SD_CMD_SET_REL_ADDR, &rca);

//     if (SD_OK != ErrSta)
//     {
//       return(ErrSta);
//     }
//   }

//   if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
//   {
//     RCA = rca;

//     /*!< Send CMD9 SEND_CSD with argument as card's RCA */
//     SDIO_CmdInitStruct.SDIO_Argument = (u32)(rca << 16);
//     SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SEND_CSD;
//     SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Long;
//     SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//     SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//     SDIO_SendCommand(&SDIO_CmdInitStruct);

//     ErrSta = CmdResp2Error();

//     if (SD_OK != ErrSta)
//     {
//       return(ErrSta);
//     }

//     CSD_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
//     CSD_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
//     CSD_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
//     CSD_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
//   }

//   ErrSta = SD_OK; /*!< All cards get intialized */

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Returns information about specific card.
//   * @param  cardinfo: pointer to a SD_CardInfo structure that contains all SD card 
//   *         information.
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_GetCardInfo( SD_CardInfo *cardinfo )
// {
//   SD_Error ErrSta = SD_OK;
//   u8 tmp = 0;

//   cardinfo->CardType = (u8)CardType;
//   cardinfo->RCA = (u16)RCA;

//   /*!< Byte 0 */
//   tmp = (u8)((CSD_Tab[0] & 0xFF000000) >> 24);
//   cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;
//   cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;
//   cardinfo->SD_csd.Reserved1 = tmp & 0x03;

//   /*!< Byte 1 */
//   tmp = (u8)((CSD_Tab[0] & 0x00FF0000) >> 16);
//   cardinfo->SD_csd.TAAC = tmp;

//   /*!< Byte 2 */
//   tmp = (u8)((CSD_Tab[0] & 0x0000FF00) >> 8);
//   cardinfo->SD_csd.NSAC = tmp;

//   /*!< Byte 3 */
//   tmp = (u8)(CSD_Tab[0] & 0x000000FF);
//   cardinfo->SD_csd.MaxBusClkFrec = tmp;

//   /*!< Byte 4 */
//   tmp = (u8)((CSD_Tab[1] & 0xFF000000) >> 24);
//   cardinfo->SD_csd.CardComdClasses = tmp << 4;

//   /*!< Byte 5 */
//   tmp = (u8)((CSD_Tab[1] & 0x00FF0000) >> 16);
//   cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
//   cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;

//   /*!< Byte 6 */
//   tmp = (u8)((CSD_Tab[1] & 0x0000FF00) >> 8);
//   cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;
//   cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;
//   cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;
//   cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;
//   cardinfo->SD_csd.Reserved2 = 0; /*!< Reserved */

//   if((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))
//   {
//     cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;

//     /*!< Byte 7 */
//     tmp = (u8)(CSD_Tab[1] & 0x000000FF);
//     cardinfo->SD_csd.DeviceSize |= (tmp) << 2;

//     /*!< Byte 8 */
//     tmp = (u8)((CSD_Tab[2] & 0xFF000000) >> 24);
//     cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;

//     cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;
//     cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);

//     /*!< Byte 9 */
//     tmp = (u8)((CSD_Tab[2] & 0x00FF0000) >> 16);
//     cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;
//     cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;
//     cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;
//     /*!< Byte 10 */
//     tmp = (u8)((CSD_Tab[2] & 0x0000FF00) >> 8);
//     cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
//     
//     cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;
//     cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
//     cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);
//     cardinfo->CardCapacity *= cardinfo->CardBlockSize;
//   }
//   else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
//   {
//     /*!< Byte 7 */
//     tmp = (u8)(CSD_Tab[1] & 0x000000FF);
//     cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;

//     /*!< Byte 8 */
//     tmp = (u8)((CSD_Tab[2] & 0xFF000000) >> 24);

//     cardinfo->SD_csd.DeviceSize |= (tmp << 8);

//     /*!< Byte 9 */
//     tmp = (u8)((CSD_Tab[2] & 0x00FF0000) >> 16);

//     cardinfo->SD_csd.DeviceSize |= (tmp);

//     /*!< Byte 10 */
//     tmp = (u8)((CSD_Tab[2] & 0x0000FF00) >> 8);
//     
//     cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;
//     cardinfo->CardBlockSize = 512;    
//   }


//   cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
//   cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;

//   /*!< Byte 11 */
//   tmp = (u8)(CSD_Tab[2] & 0x000000FF);
//   cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
//   cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);

//   /*!< Byte 12 */
//   tmp = (u8)((CSD_Tab[3] & 0xFF000000) >> 24);
//   cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;
//   cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;
//   cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;
//   cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;

//   /*!< Byte 13 */
//   tmp = (u8)((CSD_Tab[3] & 0x00FF0000) >> 16);
//   cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;
//   cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;
//   cardinfo->SD_csd.Reserved3 = 0;
//   cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);

//   /*!< Byte 14 */
//   tmp = (u8)((CSD_Tab[3] & 0x0000FF00) >> 8);
//   cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;
//   cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;
//   cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;
//   cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;
//   cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;
//   cardinfo->SD_csd.ECC = (tmp & 0x03);

//   /*!< Byte 15 */
//   tmp = (u8)(CSD_Tab[3] & 0x000000FF);
//   cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
//   cardinfo->SD_csd.Reserved4 = 1;


//   /*!< Byte 0 */
//   tmp = (u8)((CID_Tab[0] & 0xFF000000) >> 24);
//   cardinfo->SD_cid.ManufacturerID = tmp;

//   /*!< Byte 1 */
//   tmp = (u8)((CID_Tab[0] & 0x00FF0000) >> 16);
//   cardinfo->SD_cid.OEM_AppliID = tmp << 8;

//   /*!< Byte 2 */
//   tmp = (u8)((CID_Tab[0] & 0x000000FF00) >> 8);
//   cardinfo->SD_cid.OEM_AppliID |= tmp;

//   /*!< Byte 3 */
//   tmp = (u8)(CID_Tab[0] & 0x000000FF);
//   cardinfo->SD_cid.ProdName1 = tmp << 24;

//   /*!< Byte 4 */
//   tmp = (u8)((CID_Tab[1] & 0xFF000000) >> 24);
//   cardinfo->SD_cid.ProdName1 |= tmp << 16;

//   /*!< Byte 5 */
//   tmp = (u8)((CID_Tab[1] & 0x00FF0000) >> 16);
//   cardinfo->SD_cid.ProdName1 |= tmp << 8;

//   /*!< Byte 6 */
//   tmp = (u8)((CID_Tab[1] & 0x0000FF00) >> 8);
//   cardinfo->SD_cid.ProdName1 |= tmp;

//   /*!< Byte 7 */
//   tmp = (u8)(CID_Tab[1] & 0x000000FF);
//   cardinfo->SD_cid.ProdName2 = tmp;

//   /*!< Byte 8 */
//   tmp = (u8)((CID_Tab[2] & 0xFF000000) >> 24);
//   cardinfo->SD_cid.ProdRev = tmp;

//   /*!< Byte 9 */
//   tmp = (u8)((CID_Tab[2] & 0x00FF0000) >> 16);
//   cardinfo->SD_cid.ProdSN = tmp << 24;

//   /*!< Byte 10 */
//   tmp = (u8)((CID_Tab[2] & 0x0000FF00) >> 8);
//   cardinfo->SD_cid.ProdSN |= tmp << 16;

//   /*!< Byte 11 */
//   tmp = (u8)(CID_Tab[2] & 0x000000FF);
//   cardinfo->SD_cid.ProdSN |= tmp << 8;

//   /*!< Byte 12 */
//   tmp = (u8)((CID_Tab[3] & 0xFF000000) >> 24);
//   cardinfo->SD_cid.ProdSN |= tmp;

//   /*!< Byte 13 */
//   tmp = (u8)((CID_Tab[3] & 0x00FF0000) >> 16);
//   cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
//   cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;

//   /*!< Byte 14 */
//   tmp = (u8)((CID_Tab[3] & 0x0000FF00) >> 8);
//   cardinfo->SD_cid.ManufactDate |= tmp;

//   /*!< Byte 15 */
//   tmp = (u8)(CID_Tab[3] & 0x000000FF);
//   cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
//   cardinfo->SD_cid.Reserved2 = 1;
//   
//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Enables wide bus opeartion for the requeseted card if supported by 
//   *         card.
//   * @param  WideMode: Specifies the SD card wide bus mode. 
//   *   This parameter can be one of the following values:
//   *     @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
//   *     @arg SDIO_BusWide_4b: 4-bit data transfer
//   *     @arg SDIO_BusWide_1b: 1-bit data transfer
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_GetCardStatus(SD_CardStatus *cardstatus)
// {
//   SD_Error ErrSta = SD_OK;
//   u8 tmp = 0;

//   ErrSta = SD_SendSDStatus((u32 *)SDSTATUS_Tab);

//   if (ErrSta  != SD_OK)
//   {
//     return(ErrSta);
//   }

//   /*!< Byte 0 */
//   tmp = (u8)((SDSTATUS_Tab[0] & 0xC0) >> 6);
//   cardstatus->DAT_BUS_WIDTH = tmp;

//   /*!< Byte 0 */
//   tmp = (u8)((SDSTATUS_Tab[0] & 0x20) >> 5);
//   cardstatus->SECURED_MODE = tmp;

//   /*!< Byte 2 */
//   tmp = (u8)((SDSTATUS_Tab[2] & 0xFF));
//   cardstatus->SD_CARD_TYPE = tmp << 8;

//   /*!< Byte 3 */
//   tmp = (u8)((SDSTATUS_Tab[3] & 0xFF));
//   cardstatus->SD_CARD_TYPE |= tmp;

//   /*!< Byte 4 */
//   tmp = (u8)(SDSTATUS_Tab[4] & 0xFF);
//   cardstatus->SIZE_OF_PROTECTED_AREA = tmp << 24;

//   /*!< Byte 5 */
//   tmp = (u8)(SDSTATUS_Tab[5] & 0xFF);
//   cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 16;

//   /*!< Byte 6 */
//   tmp = (u8)(SDSTATUS_Tab[6] & 0xFF);
//   cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 8;

//   /*!< Byte 7 */
//   tmp = (u8)(SDSTATUS_Tab[7] & 0xFF);
//   cardstatus->SIZE_OF_PROTECTED_AREA |= tmp;

//   /*!< Byte 8 */
//   tmp = (u8)((SDSTATUS_Tab[8] & 0xFF));
//   cardstatus->SPEED_CLASS = tmp;

//   /*!< Byte 9 */
//   tmp = (u8)((SDSTATUS_Tab[9] & 0xFF));
//   cardstatus->PERFORMANCE_MOVE = tmp;

//   /*!< Byte 10 */
//   tmp = (u8)((SDSTATUS_Tab[10] & 0xF0) >> 4);
//   cardstatus->AU_SIZE = tmp;

//   /*!< Byte 11 */
//   tmp = (u8)(SDSTATUS_Tab[11] & 0xFF);
//   cardstatus->ERASE_SIZE = tmp << 8;

//   /*!< Byte 12 */
//   tmp = (u8)(SDSTATUS_Tab[12] & 0xFF);
//   cardstatus->ERASE_SIZE |= tmp;

//   /*!< Byte 13 */
//   tmp = (u8)((SDSTATUS_Tab[13] & 0xFC) >> 2);
//   cardstatus->ERASE_TIMEOUT = tmp;

//   /*!< Byte 13 */
//   tmp = (u8)((SDSTATUS_Tab[13] & 0x3));
//   cardstatus->ERASE_OFFSET = tmp;
//  
//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Enables wide bus opeartion for the requeseted card if supported by 
//   *         card.
//   * @param  WideMode: Specifies the SD card wide bus mode. 
//   *   This parameter can be one of the following values:
//   *     @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
//   *     @arg SDIO_BusWide_4b: 4-bit data transfer
//   *     @arg SDIO_BusWide_1b: 1-bit data transfer
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_EnableWideBusOperation(u32 WideMode)
// {
//   SD_Error ErrSta = SD_OK;

//   /*!< MMC Card doesn't support this feature */
//   if (SDIO_MULTIMEDIA_CARD == CardType)
//   {
//     ErrSta = SD_UNSUPPORTED_FEATURE;
//     return(ErrSta);
//   }
//   else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
//   {
//     if (SDIO_BusWide_8b == WideMode)
//     {
//       ErrSta = SD_UNSUPPORTED_FEATURE;
//       return(ErrSta);
//     }
//     else if (SDIO_BusWide_4b == WideMode)
//     {
//       ErrSta = SDEnWideBus(ENABLE);

//       if (SD_OK == ErrSta)
//       {
//         /*!< Configure the SDIO peripheral */
//         SDIO_InitStruct.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV; 
//         SDIO_InitStruct.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
//         SDIO_InitStruct.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
//         SDIO_InitStruct.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
//         SDIO_InitStruct.SDIO_BusWide = SDIO_BusWide_4b;
//         SDIO_InitStruct.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
//         SDIO_Init(&SDIO_InitStruct);
//       }
//     }
//     else
//     {
//       ErrSta = SDEnWideBus(DISABLE);

//       if (SD_OK == ErrSta)
//       {
//         /*!< Configure the SDIO peripheral */
//         SDIO_InitStruct.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV; 
//         SDIO_InitStruct.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
//         SDIO_InitStruct.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
//         SDIO_InitStruct.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
//         SDIO_InitStruct.SDIO_BusWide = SDIO_BusWide_1b;
//         SDIO_InitStruct.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
//         SDIO_Init(&SDIO_InitStruct);
//       }
//     }
//   }

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Selects od Deselects the corresponding card.
//   * @param  addr: Address of the Card to be selected.
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_SelectDeselect(u32 addr)
// {
//   SD_Error ErrSta = SD_OK;

//   /*!< Send CMD7 SDIO_SEL_DESEL_CARD */
//   SDIO_CmdInitStruct.SDIO_Argument =  addr;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SEL_DESEL_CARD;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_SEL_DESEL_CARD);

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Allows to read one block from a specified address in a card. The Data
//   *         transfer can be managed by DMA mode or Polling mode. 
//   * @note   This operation should be followed by two functions to check if the 
//   *         DMA Controller and SD Card status.
//   *          - SD_ReadWaitOperation(): this function insure that the DMA
//   *            controller has finished all data transfer.
//   *          - SD_GetStatus(): to check that the SD Card has finished the 
//   *            data transfer and it is ready for data.            
//   * @param  readbuff: pointer to the buffer that will contain the received data
//   * @param  ReadAddr: Address from where data are to be read.  
//   * @param  BlockSize: the SD card Data block size. The Block size should be 512.
//   * @retval SD_Error: SD Card Error code.
//   */
// void SD_LowLevel_DMA_RxConfig(u32 *BufferDST, u32 BufferSize)
// {
//   DMA_InitTypeDef SDDMA_InitStructure;

//   DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_FEIF | SD_SDIO_DMA_FLAG_DMEIF | SD_SDIO_DMA_FLAG_TEIF | SD_SDIO_DMA_FLAG_HTIF | SD_SDIO_DMA_FLAG_TCIF);

//   /* DMA2 Stream3  or Stream6 disable */
//   DMA_Cmd(SD_SDIO_DMA_STREAM, DISABLE);

//   /* DMA2 Stream3 or Stream6 Config */
//   DMA_DeInit(SD_SDIO_DMA_STREAM);

//   SDDMA_InitStructure.DMA_Channel = SD_SDIO_DMA_CHANNEL;
//   SDDMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SDIO_FIFO_ADDRESS;
//   SDDMA_InitStructure.DMA_Memory0BaseAddr = (u32)BufferDST;
//   SDDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
//   SDDMA_InitStructure.DMA_BufferSize = 0;
//   SDDMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
//   SDDMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
//   SDDMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
//   SDDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
//   SDDMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
//   SDDMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
//   SDDMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
//   SDDMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
//   SDDMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC4;
//   SDDMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_INC4;
//   DMA_Init(SD_SDIO_DMA_STREAM, &SDDMA_InitStructure);
//   DMA_ITConfig(SD_SDIO_DMA_STREAM, DMA_IT_TC, ENABLE);
//   DMA_FlowControllerConfig(SD_SDIO_DMA_STREAM, DMA_FlowCtrl_Peripheral);

//   /* DMA2 Stream3 or Stream6 enable */
//   DMA_Cmd(SD_SDIO_DMA_STREAM, ENABLE);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// SD_Error SD_ReadBlock(u8 *readbuff, u32 ReadAddr, u16 BlockSize)
// {
//   SD_Error ErrSta = SD_OK;

//   TransferError = SD_OK;
//   TransferEnd = 0;
//   StopCondition = 0;
//   
//   SDIO->DCTRL = 0x0;

//   
//   if(CardType == SDIO_HIGH_CAPACITY_SD_CARD)
//   {
//     BlockSize = 512;
//     ReadAddr /= 512;
//   }

//   /* Set Block Size for Card */ 
//   SDIO_CmdInitStruct.SDIO_Argument = (u32) BlockSize;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_SET_BLOCKLEN);

//   if (SD_OK != ErrSta)
//   {
//     return(ErrSta);
//   }
//   
//   SDIO_DataInitStruct.SDIO_DataTimeOut = SD_DATATIMEOUT;
//   SDIO_DataInitStruct.SDIO_DataLength = BlockSize;
//   SDIO_DataInitStruct.SDIO_DataBlockSize = (u32) 9 << 4;
//   SDIO_DataInitStruct.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
//   SDIO_DataInitStruct.SDIO_TransferMode = SDIO_TransferMode_Block;
//   SDIO_DataInitStruct.SDIO_DPSM = SDIO_DPSM_Enable;
//   SDIO_DataConfig(&SDIO_DataInitStruct);

//   /*!< Send CMD17 READ_SINGLE_BLOCK */
//   SDIO_CmdInitStruct.SDIO_Argument = (u32)ReadAddr;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_READ_SINGLE_BLOCK;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_READ_SINGLE_BLOCK);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }
//   SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
//   SDIO_DMACmd(ENABLE);
//   SD_LowLevel_DMA_RxConfig((u32 *)readbuff, BlockSize);
//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Allows to read blocks from a specified address  in a card.  The Data
//   *         transfer can be managed by DMA mode or Polling mode. 
//   * @note   This operation should be followed by two functions to check if the 
//   *         DMA Controller and SD Card status.
//   *          - SD_ReadWaitOperation(): this function insure that the DMA
//   *            controller has finished all data transfer.
//   *          - SD_GetStatus(): to check that the SD Card has finished the 
//   *            data transfer and it is ready for data.   
//   * @param  readbuff: pointer to the buffer that will contain the received data.
//   * @param  ReadAddr: Address from where data are to be read.
//   * @param  BlockSize: the SD card Data block size. The Block size should be 512.
//   * @param  NumberOfBlocks: number of blocks to be read.
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_ReadMultiBlocks(u8 *readbuff, u32 ReadAddr, u16 BlockSize, u32 NumberOfBlocks)
// {
//   SD_Error ErrSta = SD_OK;
//   TransferError = SD_OK;
//   TransferEnd = 0;
//   StopCondition = 1;
// 	
//   SDIO->DCTRL = 0x0;

//   if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
//   {
//     BlockSize = 512;
//     ReadAddr /= 512;
//   }

//   /*!< Set Block Size for Card */
//   SDIO_CmdInitStruct.SDIO_Argument = (u32) BlockSize;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_SET_BLOCKLEN);

//   if (SD_OK != ErrSta)
//   {
//     return(ErrSta);
//   }
//     
//   SDIO_DataInitStruct.SDIO_DataTimeOut = SD_DATATIMEOUT;
//   SDIO_DataInitStruct.SDIO_DataLength = NumberOfBlocks * BlockSize;
//   SDIO_DataInitStruct.SDIO_DataBlockSize = (u32) 9 << 4;
//   SDIO_DataInitStruct.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
//   SDIO_DataInitStruct.SDIO_TransferMode = SDIO_TransferMode_Block;
//   SDIO_DataInitStruct.SDIO_DPSM = SDIO_DPSM_Enable;
//   SDIO_DataConfig(&SDIO_DataInitStruct);

//   /*!< Send CMD18 READ_MULT_BLOCK with argument data address */
//   SDIO_CmdInitStruct.SDIO_Argument = (u32)ReadAddr;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_READ_MULT_BLOCK;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_READ_MULT_BLOCK);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }

//   SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
//   SDIO_DMACmd(ENABLE);
//   SD_LowLevel_DMA_RxConfig((u32 *)readbuff, (NumberOfBlocks * BlockSize));

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  This function waits until the SDIO DMA data transfer is finished. 
//   *         This function should be called after SDIO_ReadMultiBlocks() function
//   *         to insure that all data sent by the card are already transferred by 
//   *         the DMA controller.
//   * @param  None.
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_WaitReadOperation(void)
// {
//   SD_Error ErrSta = SD_OK;
//   u32 timeout;

//   timeout = SD_DATATIMEOUT;
//   
//   while ((DMAEndOfTransfer == 0x00) && (TransferEnd == 0) && (TransferError == SD_OK) && (timeout > 0))
//   {
//     timeout--;
//   }
//   
//   DMAEndOfTransfer = 0x00;

//   timeout = SD_DATATIMEOUT;
//   
//   while(((SDIO->STA & SDIO_FLAG_RXACT)) && (timeout > 0))
//   {
//     timeout--;  
//   }

//   if (StopCondition == 1)
//   {
//     ErrSta = SD_StopTransfer();
//     StopCondition = 0;
//   }
//   
//   if ((timeout == 0) && (ErrSta == SD_OK))
//   {
//     ErrSta = SD_DATA_TIMEOUT;
//   }
//   
//   /*!< Clear all the static flags */
//   SDIO_ClearFlag(SDIO_STATIC_FLAGS);

//   if (TransferError != SD_OK)
//   {
//     return(TransferError);
//   }
//   else
//   {
//     return(ErrSta);  
//   }
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Allows to write one block starting from a specified address in a card.
//   *         The Data transfer can be managed by DMA mode or Polling mode.
//   * @note   This operation should be followed by two functions to check if the 
//   *         DMA Controller and SD Card status.
//   *          - SD_ReadWaitOperation(): this function insure that the DMA
//   *            controller has finished all data transfer.
//   *          - SD_GetStatus(): to check that the SD Card has finished the 
//   *            data transfer and it is ready for data.      
//   * @param  writebuff: pointer to the buffer that contain the data to be transferred.
//   * @param  WriteAddr: Address from where data are to be read.   
//   * @param  BlockSize: the SD card Data block size. The Block size should be 512.
//   * @retval SD_Error: SD Card Error code.
//   */
// void SD_LowLevel_DMA_TxConfig(u32 *BufferSRC, u32 BufferSize)
// {
//   DMA_InitTypeDef SDDMA_InitStructure;

//   DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_FEIF | SD_SDIO_DMA_FLAG_DMEIF | SD_SDIO_DMA_FLAG_TEIF | SD_SDIO_DMA_FLAG_HTIF | SD_SDIO_DMA_FLAG_TCIF);

//   /* DMA2 Stream3  or Stream6 disable */
//   DMA_Cmd(SD_SDIO_DMA_STREAM, DISABLE);

//   /* DMA2 Stream3  or Stream6 Config */
//   DMA_DeInit(SD_SDIO_DMA_STREAM);

//   SDDMA_InitStructure.DMA_Channel = SD_SDIO_DMA_CHANNEL;
//   SDDMA_InitStructure.DMA_PeripheralBaseAddr = (u32)SDIO_FIFO_ADDRESS;
//   SDDMA_InitStructure.DMA_Memory0BaseAddr = (u32)BufferSRC;
//   SDDMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
//   SDDMA_InitStructure.DMA_BufferSize = 0;
//   SDDMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
//   SDDMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
//   SDDMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
//   SDDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
//   SDDMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
//   SDDMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
//   SDDMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
//   SDDMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
//   SDDMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC4;
//   SDDMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_INC4;
//   DMA_Init(SD_SDIO_DMA_STREAM, &SDDMA_InitStructure);
//   DMA_ITConfig(SD_SDIO_DMA_STREAM, DMA_IT_TC, ENABLE);
//   DMA_FlowControllerConfig(SD_SDIO_DMA_STREAM, DMA_FlowCtrl_Peripheral);

//   /* DMA2 Stream3  or Stream6 enable */
//   DMA_Cmd(SD_SDIO_DMA_STREAM, ENABLE);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// SD_Error SD_WriteBlock(u8 *writebuff, u32 WriteAddr, u16 BlockSize)
// {
//   SD_Error ErrSta = SD_OK;

//   TransferError = SD_OK;
//   TransferEnd = 0;
//   StopCondition = 0;
//   
//   SDIO->DCTRL = 0x0;


//   if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
//   {
//     BlockSize = 512;
//     WriteAddr /= 512;
//   }

//   /* Set Block Size for Card */ 
//   SDIO_CmdInitStruct.SDIO_Argument = (u32) BlockSize;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_SET_BLOCKLEN);

//   if (SD_OK != ErrSta)
//   {
//     return(ErrSta);
//   }
//     
//   /*!< Send CMD24 WRITE_SINGLE_BLOCK */
//   SDIO_CmdInitStruct.SDIO_Argument = WriteAddr;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_WRITE_SINGLE_BLOCK;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_WRITE_SINGLE_BLOCK);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }

//   SDIO_DataInitStruct.SDIO_DataTimeOut = SD_DATATIMEOUT;
//   SDIO_DataInitStruct.SDIO_DataLength = BlockSize;
//   SDIO_DataInitStruct.SDIO_DataBlockSize = (u32) 9 << 4;
//   SDIO_DataInitStruct.SDIO_TransferDir = SDIO_TransferDir_ToCard;
//   SDIO_DataInitStruct.SDIO_TransferMode = SDIO_TransferMode_Block;
//   SDIO_DataInitStruct.SDIO_DPSM = SDIO_DPSM_Enable;
//   SDIO_DataConfig(&SDIO_DataInitStruct);

//   /*!< In case of single data block transfer no need of stop command at all */
//   SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
//   SD_LowLevel_DMA_TxConfig((u32 *)writebuff, BlockSize);
//   SDIO_DMACmd(ENABLE);

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Allows to write blocks starting from a specified address in a card.
//   *         The Data transfer can be managed by DMA mode only. 
//   * @note   This operation should be followed by two functions to check if the 
//   *         DMA Controller and SD Card status.
//   *          - SD_ReadWaitOperation(): this function insure that the DMA
//   *            controller has finished all data transfer.
//   *          - SD_GetStatus(): to check that the SD Card has finished the 
//   *            data transfer and it is ready for data.     
//   * @param  WriteAddr: Address from where data are to be read.
//   * @param  writebuff: pointer to the buffer that contain the data to be transferred.
//   * @param  BlockSize: the SD card Data block size. The Block size should be 512.
//   * @param  NumberOfBlocks: number of blocks to be written.
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_WriteMultiBlocks(u8 *writebuff, u32 WriteAddr, u16 BlockSize, u32 NumberOfBlocks)
// {
//   SD_Error ErrSta = SD_OK;

//   TransferError = SD_OK;
//   TransferEnd = 0;
//   StopCondition = 1;
//   
//   SDIO->DCTRL = 0x0;

//   if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
//   {
//     BlockSize = 512;
//     WriteAddr /= 512;
//   }

//   /* Set Block Size for Card */ 
//   SDIO_CmdInitStruct.SDIO_Argument = (u32) BlockSize;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_SET_BLOCKLEN);

//   if (SD_OK != ErrSta)
//   {
//     return(ErrSta);
//   }
//   
//   /*!< To improve performance */
//   SDIO_CmdInitStruct.SDIO_Argument = (u32) (RCA << 16);
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_APP_CMD;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);


//   ErrSta = CmdResp1Error(SD_CMD_APP_CMD);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }
//   /*!< To improve performance */
//   SDIO_CmdInitStruct.SDIO_Argument = (u32)NumberOfBlocks;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SET_BLOCK_COUNT;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_SET_BLOCK_COUNT);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }


//   /*!< Send CMD25 WRITE_MULT_BLOCK with argument data address */
//   SDIO_CmdInitStruct.SDIO_Argument = (u32)WriteAddr;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_WRITE_MULT_BLOCK;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_WRITE_MULT_BLOCK);

//   if (SD_OK != ErrSta)
//   {
//     return(ErrSta);
//   }

//   SDIO_DataInitStruct.SDIO_DataTimeOut = SD_DATATIMEOUT;
//   SDIO_DataInitStruct.SDIO_DataLength = NumberOfBlocks * BlockSize;
//   SDIO_DataInitStruct.SDIO_DataBlockSize = (u32) 9 << 4;
//   SDIO_DataInitStruct.SDIO_TransferDir = SDIO_TransferDir_ToCard;
//   SDIO_DataInitStruct.SDIO_TransferMode = SDIO_TransferMode_Block;
//   SDIO_DataInitStruct.SDIO_DPSM = SDIO_DPSM_Enable;
//   SDIO_DataConfig(&SDIO_DataInitStruct);

//   SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
//   SDIO_DMACmd(ENABLE);
//   SD_LowLevel_DMA_TxConfig((u32 *)writebuff, (NumberOfBlocks * BlockSize));

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  This function waits until the SDIO DMA data transfer is finished. 
//   *         This function should be called after SDIO_WriteBlock() and
//   *         SDIO_WriteMultiBlocks() function to insure that all data sent by the 
//   *         card are already transferred by the DMA controller.        
//   * @param  None.
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_WaitWriteOperation(void)
// {
//   SD_Error ErrSta = SD_OK;
//   u32 timeout;

//   timeout = SD_DATATIMEOUT;
//   
//   while ((DMAEndOfTransfer == 0x00) && (TransferEnd == 0) && (TransferError == SD_OK) && (timeout > 0))
//   {
//     timeout--;
//   }
//   
//   DMAEndOfTransfer = 0x00;

//   timeout = SD_DATATIMEOUT;
//   
//   while(((SDIO->STA & SDIO_FLAG_TXACT)) && (timeout > 0))
//   {
//     timeout--;  
//   }

//   if (StopCondition == 1)
//   {
//     ErrSta = SD_StopTransfer();
//     StopCondition = 0;
//   }
//   
//   if ((timeout == 0) && (ErrSta == SD_OK))
//   {
//     ErrSta = SD_DATA_TIMEOUT;
//   }
//   
//   /*!< Clear all the static flags */
//   SDIO_ClearFlag(SDIO_STATIC_FLAGS);
//   
//   if (TransferError != SD_OK)
//   {
//     return(TransferError);
//   }
//   else
//   {
//     return(ErrSta);
//   }
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Gets the cuurent data transfer state.
//   * @param  None
//   * @retval SDTransferState: Data Transfer state.
//   *   This value can be: 
//   *        - SD_TRANSFER_OK: No data transfer is acting
//   *        - SD_TRANSFER_BUSY: Data transfer is acting
//   */
// SDTransferState SD_GetTransferState(void)
// {
//   if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))
//   {
//     return(SD_TRANSFER_BUSY);
//   }
//   else
//   {
//     return(SD_TRANSFER_OK);
//   }
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Aborts an ongoing data transfer.
//   * @param  None
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_StopTransfer(void)
// {
//   SD_Error ErrSta = SD_OK;

//   /*!< Send CMD12 STOP_TRANSMISSION  */
//   SDIO_CmdInitStruct.SDIO_Argument = 0x0;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Allows to erase memory area specified for the given card.
//   * @param  startaddr: the start address.
//   * @param  endaddr: the end address.
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_Erase(u32 startaddr, u32 endaddr)
// {
//   SD_Error ErrSta = SD_OK;
//   u32 delay = 0;
//   vu32 maxdelay = 0;
//   u8 cardstate = 0;

//   /*!< Check if the card coomnd class supports erase command */
//   if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
//   {
//     ErrSta = SD_REQUEST_NOT_APPLICABLE;
//     return(ErrSta);
//   }

//   maxdelay = 120000 / ((SDIO->CLKCR & 0xFF) + 2);

//   if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
//   {
//     ErrSta = SD_LOCK_UNLOCK_FAILED;
//     return(ErrSta);
//   }

//   if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
//   {
//     startaddr /= 512;
//     endaddr /= 512;
//   }
//   
//   /*!< According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
//   if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
//   {
//     /*!< Send CMD32 SD_ERASE_GRP_START with argument as addr  */
//     SDIO_CmdInitStruct.SDIO_Argument = startaddr;
//     SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_START;
//     SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//     SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//     SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//     SDIO_SendCommand(&SDIO_CmdInitStruct);

//     ErrSta = CmdResp1Error(SD_CMD_SD_ERASE_GRP_START);
//     if (ErrSta != SD_OK)
//     {
//       return(ErrSta);
//     }

//     /*!< Send CMD33 SD_ERASE_GRP_END with argument as addr  */
//     SDIO_CmdInitStruct.SDIO_Argument = endaddr;
//     SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_END;
//     SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//     SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//     SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//     SDIO_SendCommand(&SDIO_CmdInitStruct);

//     ErrSta = CmdResp1Error(SD_CMD_SD_ERASE_GRP_END);
//     if (ErrSta != SD_OK)
//     {
//       return(ErrSta);
//     }
//   }

//   /*!< Send CMD38 ERASE */
//   SDIO_CmdInitStruct.SDIO_Argument = 0;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_ERASE;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_ERASE);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }

//   for (delay = 0; delay < maxdelay; delay++)
//   {}

//   /*!< Wait till the card is in programming state */
//   ErrSta = IsCardProgramming(&cardstate);
//   delay = SD_DATATIMEOUT;
//   while ((delay > 0) && (ErrSta == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate)))
//   {
//     ErrSta = IsCardProgramming(&cardstate);
//     delay--;
//   }

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Returns the current card's status.
//   * @param  pcardstatus: pointer to the buffer that will contain the SD card 
//   *         status (Card Status register).
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_SendStatus(u32 *pcardstatus)
// {
//   SD_Error ErrSta = SD_OK;

//   if (pcardstatus == NULL)
//   {
//     ErrSta = SD_INVALID_PARAMETER;
//     return(ErrSta);
//   }

//   SDIO_CmdInitStruct.SDIO_Argument = (u32) RCA << 16;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_SEND_STATUS);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }

//   *pcardstatus = SDIO_GetResponse(SDIO_RESP1);

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Returns the current SD card's status.
//   * @param  psdstatus: pointer to the buffer that will contain the SD card status 
//   *         (SD Status register).
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_SendSDStatus(u32 *psdstatus)
// {
//   SD_Error ErrSta = SD_OK;
//   u32 count = 0;

//   if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
//   {
//     ErrSta = SD_LOCK_UNLOCK_FAILED;
//     return(ErrSta);
//   }

//   /*!< Set block size for card if it is not equal to current block size for card. */
//   SDIO_CmdInitStruct.SDIO_Argument = 64;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_SET_BLOCKLEN);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }

//   /*!< CMD55 */
//   SDIO_CmdInitStruct.SDIO_Argument = (u32) RCA << 16;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_APP_CMD;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);
//   ErrSta = CmdResp1Error(SD_CMD_APP_CMD);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }

//   SDIO_DataInitStruct.SDIO_DataTimeOut = SD_DATATIMEOUT;
//   SDIO_DataInitStruct.SDIO_DataLength = 64;
//   SDIO_DataInitStruct.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;
//   SDIO_DataInitStruct.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
//   SDIO_DataInitStruct.SDIO_TransferMode = SDIO_TransferMode_Block;
//   SDIO_DataInitStruct.SDIO_DPSM = SDIO_DPSM_Enable;
//   SDIO_DataConfig(&SDIO_DataInitStruct);

//   /*!< Send ACMD13 SD_APP_STAUS  with argument as card's RCA.*/
//   SDIO_CmdInitStruct.SDIO_Argument = 0;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SD_APP_STAUS;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);
//   ErrSta = CmdResp1Error(SD_CMD_SD_APP_STAUS);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }

//   while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
//   {
//     if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
//     {
//       for (count = 0; count < 8; count++)
//       {
//         *(psdstatus + count) = SDIO_ReadData();
//       }
//       psdstatus += 8;
//     }
//   }

//   if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
//   {
//     SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
//     ErrSta = SD_DATA_TIMEOUT;
//     return(ErrSta);
//   }
//   else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
//   {
//     SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
//     ErrSta = SD_DATA_CRC_FAIL;
//     return(ErrSta);
//   }
//   else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
//   {
//     SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
//     ErrSta = SD_RX_OVERRUN;
//     return(ErrSta);
//   }
//   else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
//   {
//     SDIO_ClearFlag(SDIO_FLAG_STBITERR);
//     ErrSta = SD_START_BIT_ERR;
//     return(ErrSta);
//   }

//   count = SD_DATATIMEOUT;
//   while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) && (count > 0))
//   {
//     *psdstatus = SDIO_ReadData();
//     psdstatus++;
//     count--;
//   }
//   /*!< Clear all the static status flags*/
//   SDIO_ClearFlag(SDIO_STATIC_FLAGS);

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Allows to process all the interrupts that are high.
//   * @param  None
//   * @retval SD_Error: SD Card Error code.
//   */
// SD_Error SD_ProcessIRQSrc(void)
// { 
//   if (SDIO_GetITStatus(SDIO_IT_DATAEND) != RESET)
//   {
//     TransferError = SD_OK;
//     SDIO_ClearITPendingBit(SDIO_IT_DATAEND);
//     TransferEnd = 1;
//   }  
//   else if (SDIO_GetITStatus(SDIO_IT_DCRCFAIL) != RESET)
//   {
//     SDIO_ClearITPendingBit(SDIO_IT_DCRCFAIL);
//     TransferError = SD_DATA_CRC_FAIL;
//   }
//   else if (SDIO_GetITStatus(SDIO_IT_DTIMEOUT) != RESET)
//   {
//     SDIO_ClearITPendingBit(SDIO_IT_DTIMEOUT);
//     TransferError = SD_DATA_TIMEOUT;
//   }
//   else if (SDIO_GetITStatus(SDIO_IT_RXOVERR) != RESET)
//   {
//     SDIO_ClearITPendingBit(SDIO_IT_RXOVERR);
//     TransferError = SD_RX_OVERRUN;
//   }
//   else if (SDIO_GetITStatus(SDIO_IT_TXUNDERR) != RESET)
//   {
//     SDIO_ClearITPendingBit(SDIO_IT_TXUNDERR);
//     TransferError = SD_TX_UNDERRUN;
//   }
//   else if (SDIO_GetITStatus(SDIO_IT_STBITERR) != RESET)
//   {
//     SDIO_ClearITPendingBit(SDIO_IT_STBITERR);
//     TransferError = SD_START_BIT_ERR;
//   }

//   SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
//                 SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
//                 SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
//   return(TransferError);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  This function waits until the SDIO DMA data transfer is finished. 
//   * @param  None.
//   * @retval None.
//   */
// void SD_ProcessDMAIRQ(void)
// {
//   if(DMA2->LISR & SD_SDIO_DMA_FLAG_TCIF)
//   {
//     DMAEndOfTransfer = 0x01;
//     DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_TCIF|SD_SDIO_DMA_FLAG_FEIF);
//   }
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : CmdError
// **功能 : Checks for error conditions for CMD0
// **輸入 : None
// **輸出 : ErrSta
// **使用 : ErrSta = CmdError()
// **=====================================================================================================*/
// /*=====================================================================================================*/
// static SD_Error CmdError( void )
// {
// 	u32 TimeOut;
// 	SD_Error ErrSta = SD_OK;

// 	TimeOut = SDIO_CMD0TIMEOUT; /*!< 10000 */

// 	while((TimeOut > 0) && (SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) == RESET))
// 		TimeOut--;

// 	if(TimeOut == 0) {
// 		ErrSta = SD_CMD_RSP_TIMEOUT;
// 		return (ErrSta);
// 	}

// 	SDIO_ClearFlag(SDIO_STATIC_FLAGS);

// 	return (ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : CmdResp7Error
// **功能 : Checks for error conditions for R7 response
// **輸入 : None
// **輸出 : ErrSta
// **使用 : ErrSta = CmdResp7Error()
// **=====================================================================================================*/
// /*=====================================================================================================*/
// static SD_Error CmdResp7Error( void )
// {
// 	u32 Status;
// 	u32 TimeOut = SDIO_CMD0TIMEOUT;
// 	SD_Error ErrSta = SD_OK;

// 	Status = SDIO->STA;

// 	while(!(Status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)) && (TimeOut > 0)) {
// 		TimeOut--;
// 		Status = SDIO->STA;
// 	}

// 	if((TimeOut == 0) || (Status & SDIO_FLAG_CTIMEOUT)) {
// 		/* Card is not V2.0 complient or card does not support the set voltage range */
// 		ErrSta = SD_CMD_RSP_TIMEOUT;
// 		SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
// 		return (ErrSta);
// 	}

// 	if(Status & SDIO_FLAG_CMDREND) {
// 		/* Card is SD V2.0 compliant */
// 		ErrSta = SD_OK;
// 		SDIO_ClearFlag(SDIO_FLAG_CMDREND);
// 		return (ErrSta);
// 	}

// 	return (ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Checks for error conditions for R1 response.
//   * @param  cmd: The sent command index.
//   * @retval SD_Error: SD Card Error code.
//   */
// static SD_Error CmdResp1Error(u8 cmd)
// {
//   SD_Error ErrSta = SD_OK;
//   u32 status;
//   u32 response_r1;

//   status = SDIO->STA;

//   while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
//   {
//     status = SDIO->STA;
//   }

//   if (status & SDIO_FLAG_CTIMEOUT)
//   {
//     ErrSta = SD_CMD_RSP_TIMEOUT;
//     SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
//     return(ErrSta);
//   }
//   else if (status & SDIO_FLAG_CCRCFAIL)
//   {
//     ErrSta = SD_CMD_CRC_FAIL;
//     SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
//     return(ErrSta);
//   }

//   /*!< Check response received is of desired command */
//   if (SDIO_GetCommandResponse() != cmd)
//   {
//     ErrSta = SD_ILLEGAL_CMD;
//     return(ErrSta);
//   }

//   /*!< Clear all the static flags */
//   SDIO_ClearFlag(SDIO_STATIC_FLAGS);

//   /*!< We have received response, retrieve it for analysis  */
//   response_r1 = SDIO_GetResponse(SDIO_RESP1);

//   if ((response_r1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
//   {
//     return(ErrSta);
//   }

//   if (response_r1 & SD_OCR_ADDR_OUT_OF_RANGE)
//   {
//     return(SD_ADDR_OUT_OF_RANGE);
//   }

//   if (response_r1 & SD_OCR_ADDR_MISALIGNED)
//   {
//     return(SD_ADDR_MISALIGNED);
//   }

//   if (response_r1 & SD_OCR_BLOCK_LEN_ERR)
//   {
//     return(SD_BLOCK_LEN_ERR);
//   }

//   if (response_r1 & SD_OCR_ERASE_SEQ_ERR)
//   {
//     return(SD_ERASE_SEQ_ERR);
//   }

//   if (response_r1 & SD_OCR_BAD_ERASE_PARAM)
//   {
//     return(SD_BAD_ERASE_PARAM);
//   }

//   if (response_r1 & SD_OCR_WRITE_PROT_VIOLATION)
//   {
//     return(SD_WRITE_PROT_VIOLATION);
//   }

//   if (response_r1 & SD_OCR_LOCK_UNLOCK_FAILED)
//   {
//     return(SD_LOCK_UNLOCK_FAILED);
//   }

//   if (response_r1 & SD_OCR_COM_CRC_FAILED)
//   {
//     return(SD_COM_CRC_FAILED);
//   }

//   if (response_r1 & SD_OCR_ILLEGAL_CMD)
//   {
//     return(SD_ILLEGAL_CMD);
//   }

//   if (response_r1 & SD_OCR_CARD_ECC_FAILED)
//   {
//     return(SD_CARD_ECC_FAILED);
//   }

//   if (response_r1 & SD_OCR_CC_ERROR)
//   {
//     return(SD_CC_ERROR);
//   }

//   if (response_r1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
//   {
//     return(SD_GENERAL_UNKNOWN_ERROR);
//   }

//   if (response_r1 & SD_OCR_STREAM_READ_UNDERRUN)
//   {
//     return(SD_STREAM_READ_UNDERRUN);
//   }

//   if (response_r1 & SD_OCR_STREAM_WRITE_OVERRUN)
//   {
//     return(SD_STREAM_WRITE_OVERRUN);
//   }

//   if (response_r1 & SD_OCR_CID_CSD_OVERWRIETE)
//   {
//     return(SD_CID_CSD_OVERWRITE);
//   }

//   if (response_r1 & SD_OCR_WP_ERASE_SKIP)
//   {
//     return(SD_WP_ERASE_SKIP);
//   }

//   if (response_r1 & SD_OCR_CARD_ECC_DISABLED)
//   {
//     return(SD_CARD_ECC_DISABLED);
//   }

//   if (response_r1 & SD_OCR_ERASE_RESET)
//   {
//     return(SD_ERASE_RESET);
//   }

//   if (response_r1 & SD_OCR_AKE_SEQ_ERROR)
//   {
//     return(SD_AKE_SEQ_ERROR);
//   }
//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Checks for error conditions for R3 (OCR) response.
//   * @param  None
//   * @retval SD_Error: SD Card Error code.
//   */
// static SD_Error CmdResp3Error(void)
// {
//   SD_Error ErrSta = SD_OK;
//   u32 status;

//   status = SDIO->STA;

//   while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
//   {
//     status = SDIO->STA;
//   }

//   if (status & SDIO_FLAG_CTIMEOUT)
//   {
//     ErrSta = SD_CMD_RSP_TIMEOUT;
//     SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
//     return(ErrSta);
//   }
//   /*!< Clear all the static flags */
//   SDIO_ClearFlag(SDIO_STATIC_FLAGS);
//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Checks for error conditions for R2 (CID or CSD) response.
//   * @param  None
//   * @retval SD_Error: SD Card Error code.
//   */
// static SD_Error CmdResp2Error(void)
// {
//   SD_Error ErrSta = SD_OK;
//   u32 status;

//   status = SDIO->STA;

//   while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
//   {
//     status = SDIO->STA;
//   }

//   if (status & SDIO_FLAG_CTIMEOUT)
//   {
//     ErrSta = SD_CMD_RSP_TIMEOUT;
//     SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
//     return(ErrSta);
//   }
//   else if (status & SDIO_FLAG_CCRCFAIL)
//   {
//     ErrSta = SD_CMD_CRC_FAIL;
//     SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
//     return(ErrSta);
//   }

//   /*!< Clear all the static flags */
//   SDIO_ClearFlag(SDIO_STATIC_FLAGS);

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Checks for error conditions for R6 (RCA) response.
//   * @param  cmd: The sent command index.
//   * @param  prca: pointer to the variable that will contain the SD card relative 
//   *         address RCA. 
//   * @retval SD_Error: SD Card Error code.
//   */
// static SD_Error CmdResp6Error(u8 cmd, u16 *prca)
// {
//   SD_Error ErrSta = SD_OK;
//   u32 status;
//   u32 response_r1;

//   status = SDIO->STA;

//   while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
//   {
//     status = SDIO->STA;
//   }

//   if (status & SDIO_FLAG_CTIMEOUT)
//   {
//     ErrSta = SD_CMD_RSP_TIMEOUT;
//     SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
//     return(ErrSta);
//   }
//   else if (status & SDIO_FLAG_CCRCFAIL)
//   {
//     ErrSta = SD_CMD_CRC_FAIL;
//     SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
//     return(ErrSta);
//   }

//   /*!< Check response received is of desired command */
//   if (SDIO_GetCommandResponse() != cmd)
//   {
//     ErrSta = SD_ILLEGAL_CMD;
//     return(ErrSta);
//   }

//   /*!< Clear all the static flags */
//   SDIO_ClearFlag(SDIO_STATIC_FLAGS);

//   /*!< We have received response, retrieve it.  */
//   response_r1 = SDIO_GetResponse(SDIO_RESP1);

//   if (SD_ALLZERO == (response_r1 & (SD_R6_GENERAL_UNKNOWN_ERROR | SD_R6_ILLEGAL_CMD | SD_R6_COM_CRC_FAILED)))
//   {
//     *prca = (u16) (response_r1 >> 16);
//     return(ErrSta);
//   }

//   if (response_r1 & SD_R6_GENERAL_UNKNOWN_ERROR)
//   {
//     return(SD_GENERAL_UNKNOWN_ERROR);
//   }

//   if (response_r1 & SD_R6_ILLEGAL_CMD)
//   {
//     return(SD_ILLEGAL_CMD);
//   }

//   if (response_r1 & SD_R6_COM_CRC_FAILED)
//   {
//     return(SD_COM_CRC_FAILED);
//   }

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Enables or disables the SDIO wide bus mode.
//   * @param  NewState: new state of the SDIO wide bus mode.
//   *   This parameter can be: ENABLE or DISABLE.
//   * @retval SD_Error: SD Card Error code.
//   */
// static SD_Error SDEnWideBus(FunctionalState NewState)
// {
//   SD_Error ErrSta = SD_OK;

//   u32 scr[2] = {0, 0};

//   if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
//   {
//     ErrSta = SD_LOCK_UNLOCK_FAILED;
//     return(ErrSta);
//   }

//   /*!< Get SCR Register */
//   ErrSta = FindSCR(RCA, scr);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }

//   /*!< If wide bus operation to be enabled */
//   if (NewState == ENABLE)
//   {
//     /*!< If requested card supports wide bus operation */
//     if ((scr[1] & SD_WIDE_BUS_SUPPORT) != SD_ALLZERO)
//     {
//       /*!< Send CMD55 APP_CMD with argument as card's RCA.*/
//       SDIO_CmdInitStruct.SDIO_Argument = (u32) RCA << 16;
//       SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_APP_CMD;
//       SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//       SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//       SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//       SDIO_SendCommand(&SDIO_CmdInitStruct);

//       ErrSta = CmdResp1Error(SD_CMD_APP_CMD);

//       if (ErrSta != SD_OK)
//       {
//         return(ErrSta);
//       }

//       /*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
//       SDIO_CmdInitStruct.SDIO_Argument = 0x2;
//       SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
//       SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//       SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//       SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//       SDIO_SendCommand(&SDIO_CmdInitStruct);

//       ErrSta = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);

//       if (ErrSta != SD_OK)
//       {
//         return(ErrSta);
//       }
//       return(ErrSta);
//     }
//     else
//     {
//       ErrSta = SD_REQUEST_NOT_APPLICABLE;
//       return(ErrSta);
//     }
//   }   /*!< If wide bus operation to be disabled */
//   else
//   {
//     /*!< If requested card supports 1 bit mode operation */
//     if ((scr[1] & SD_SINGLE_BUS_SUPPORT) != SD_ALLZERO)
//     {
//       /*!< Send CMD55 APP_CMD with argument as card's RCA.*/
//       SDIO_CmdInitStruct.SDIO_Argument = (u32) RCA << 16;
//       SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_APP_CMD;
//       SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//       SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//       SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//       SDIO_SendCommand(&SDIO_CmdInitStruct);


//       ErrSta = CmdResp1Error(SD_CMD_APP_CMD);

//       if (ErrSta != SD_OK)
//       {
//         return(ErrSta);
//       }

//       /*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
//       SDIO_CmdInitStruct.SDIO_Argument = 0x00;
//       SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
//       SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//       SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//       SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//       SDIO_SendCommand(&SDIO_CmdInitStruct);

//       ErrSta = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);

//       if (ErrSta != SD_OK)
//       {
//         return(ErrSta);
//       }

//       return(ErrSta);
//     }
//     else
//     {
//       ErrSta = SD_REQUEST_NOT_APPLICABLE;
//       return(ErrSta);
//     }
//   }
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Checks if the SD card is in programming state.
//   * @param  pstatus: pointer to the variable that will contain the SD card state.
//   * @retval SD_Error: SD Card Error code.
//   */
// static SD_Error IsCardProgramming(u8 *pstatus)
// {
//   SD_Error ErrSta = SD_OK;
//   vu32 respR1 = 0, status = 0;

//   SDIO_CmdInitStruct.SDIO_Argument = (u32) RCA << 16;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   status = SDIO->STA;
//   while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
//   {
//     status = SDIO->STA;
//   }

//   if (status & SDIO_FLAG_CTIMEOUT)
//   {
//     ErrSta = SD_CMD_RSP_TIMEOUT;
//     SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
//     return(ErrSta);
//   }
//   else if (status & SDIO_FLAG_CCRCFAIL)
//   {
//     ErrSta = SD_CMD_CRC_FAIL;
//     SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
//     return(ErrSta);
//   }

//   status = (u32)SDIO_GetCommandResponse();

//   /*!< Check response received is of desired command */
//   if (status != SD_CMD_SEND_STATUS)
//   {
//     ErrSta = SD_ILLEGAL_CMD;
//     return(ErrSta);
//   }

//   /*!< Clear all the static flags */
//   SDIO_ClearFlag(SDIO_STATIC_FLAGS);


//   /*!< We have received response, retrieve it for analysis  */
//   respR1 = SDIO_GetResponse(SDIO_RESP1);

//   /*!< Find out card status */
//   *pstatus = (u8) ((respR1 >> 9) & 0x0000000F);

//   if ((respR1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
//   {
//     return(ErrSta);
//   }

//   if (respR1 & SD_OCR_ADDR_OUT_OF_RANGE)
//   {
//     return(SD_ADDR_OUT_OF_RANGE);
//   }

//   if (respR1 & SD_OCR_ADDR_MISALIGNED)
//   {
//     return(SD_ADDR_MISALIGNED);
//   }

//   if (respR1 & SD_OCR_BLOCK_LEN_ERR)
//   {
//     return(SD_BLOCK_LEN_ERR);
//   }

//   if (respR1 & SD_OCR_ERASE_SEQ_ERR)
//   {
//     return(SD_ERASE_SEQ_ERR);
//   }

//   if (respR1 & SD_OCR_BAD_ERASE_PARAM)
//   {
//     return(SD_BAD_ERASE_PARAM);
//   }

//   if (respR1 & SD_OCR_WRITE_PROT_VIOLATION)
//   {
//     return(SD_WRITE_PROT_VIOLATION);
//   }

//   if (respR1 & SD_OCR_LOCK_UNLOCK_FAILED)
//   {
//     return(SD_LOCK_UNLOCK_FAILED);
//   }

//   if (respR1 & SD_OCR_COM_CRC_FAILED)
//   {
//     return(SD_COM_CRC_FAILED);
//   }

//   if (respR1 & SD_OCR_ILLEGAL_CMD)
//   {
//     return(SD_ILLEGAL_CMD);
//   }

//   if (respR1 & SD_OCR_CARD_ECC_FAILED)
//   {
//     return(SD_CARD_ECC_FAILED);
//   }

//   if (respR1 & SD_OCR_CC_ERROR)
//   {
//     return(SD_CC_ERROR);
//   }

//   if (respR1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
//   {
//     return(SD_GENERAL_UNKNOWN_ERROR);
//   }

//   if (respR1 & SD_OCR_STREAM_READ_UNDERRUN)
//   {
//     return(SD_STREAM_READ_UNDERRUN);
//   }

//   if (respR1 & SD_OCR_STREAM_WRITE_OVERRUN)
//   {
//     return(SD_STREAM_WRITE_OVERRUN);
//   }

//   if (respR1 & SD_OCR_CID_CSD_OVERWRIETE)
//   {
//     return(SD_CID_CSD_OVERWRITE);
//   }

//   if (respR1 & SD_OCR_WP_ERASE_SKIP)
//   {
//     return(SD_WP_ERASE_SKIP);
//   }

//   if (respR1 & SD_OCR_CARD_ECC_DISABLED)
//   {
//     return(SD_CARD_ECC_DISABLED);
//   }

//   if (respR1 & SD_OCR_ERASE_RESET)
//   {
//     return(SD_ERASE_RESET);
//   }

//   if (respR1 & SD_OCR_AKE_SEQ_ERROR)
//   {
//     return(SD_AKE_SEQ_ERROR);
//   }

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Find the SD card SCR register value.
//   * @param  rca: selected card address.
//   * @param  pscr: pointer to the buffer that will contain the SCR value.
//   * @retval SD_Error: SD Card Error code.
//   */
// static SD_Error FindSCR(u16 rca, u32 *pscr)
// {
//   u32 index = 0;
//   SD_Error ErrSta = SD_OK;
//   u32 tempscr[2] = {0, 0};

//   /*!< Set Block Size To 8 Bytes */
//   /*!< Send CMD55 APP_CMD with argument as card's RCA */
//   SDIO_CmdInitStruct.SDIO_Argument = (u32)8;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_SET_BLOCKLEN);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }

//   /*!< Send CMD55 APP_CMD with argument as card's RCA */
//   SDIO_CmdInitStruct.SDIO_Argument = (u32) RCA << 16;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_APP_CMD;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_APP_CMD);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }
//   SDIO_DataInitStruct.SDIO_DataTimeOut = SD_DATATIMEOUT;
//   SDIO_DataInitStruct.SDIO_DataLength = 8;
//   SDIO_DataInitStruct.SDIO_DataBlockSize = SDIO_DataBlockSize_8b;
//   SDIO_DataInitStruct.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
//   SDIO_DataInitStruct.SDIO_TransferMode = SDIO_TransferMode_Block;
//   SDIO_DataInitStruct.SDIO_DPSM = SDIO_DPSM_Enable;
//   SDIO_DataConfig(&SDIO_DataInitStruct);


//   /*!< Send ACMD51 SD_APP_SEND_SCR with argument as 0 */
//   SDIO_CmdInitStruct.SDIO_Argument = 0x0;
//   SDIO_CmdInitStruct.SDIO_CmdIndex = SD_CMD_SD_APP_SEND_SCR;
//   SDIO_CmdInitStruct.SDIO_Response = SDIO_Response_Short;
//   SDIO_CmdInitStruct.SDIO_Wait = SDIO_Wait_No;
//   SDIO_CmdInitStruct.SDIO_CPSM = SDIO_CPSM_Enable;
//   SDIO_SendCommand(&SDIO_CmdInitStruct);

//   ErrSta = CmdResp1Error(SD_CMD_SD_APP_SEND_SCR);

//   if (ErrSta != SD_OK)
//   {
//     return(ErrSta);
//   }

//   while (!(SDIO->STA & (SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
//   {
//     if (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
//     {
//       *(tempscr + index) = SDIO_ReadData();
//       index++;
//     }
//   }

//   if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
//   {
//     SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
//     ErrSta = SD_DATA_TIMEOUT;
//     return(ErrSta);
//   }
//   else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
//   {
//     SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
//     ErrSta = SD_DATA_CRC_FAIL;
//     return(ErrSta);
//   }
//   else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
//   {
//     SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
//     ErrSta = SD_RX_OVERRUN;
//     return(ErrSta);
//   }
//   else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
//   {
//     SDIO_ClearFlag(SDIO_FLAG_STBITERR);
//     ErrSta = SD_START_BIT_ERR;
//     return(ErrSta);
//   }

//   /*!< Clear all the static flags */
//   SDIO_ClearFlag(SDIO_STATIC_FLAGS);

//   *(pscr + 1) = ((tempscr[0] & SD_0TO7BITS) << 24) | ((tempscr[0] & SD_8TO15BITS) << 8) | ((tempscr[0] & SD_16TO23BITS) >> 8) | ((tempscr[0] & SD_24TO31BITS) >> 24);

//   *(pscr) = ((tempscr[1] & SD_0TO7BITS) << 24) | ((tempscr[1] & SD_8TO15BITS) << 8) | ((tempscr[1] & SD_16TO23BITS) >> 8) | ((tempscr[1] & SD_24TO31BITS) >> 24);

//   return(ErrSta);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*
// **函數 : 
// **功能 : 
// **輸入 : 
// **輸出 : 
// **使用 : 
// **=====================================================================================================*/
// /*=====================================================================================================*/
// /**
//   * @brief  Converts the number of bytes in power of two and returns the power.
//   * @param  NumberOfBytes: number of bytes.
//   * @retval None
//   */
// u8 convert_from_bytes_to_power_of_two(u16 NumberOfBytes)
// {
//   u8 count = 0;

//   while (NumberOfBytes != 1)
//   {
//     NumberOfBytes >>= 1;
//     count++;
//   }
//   return(count);
// }
// /*=====================================================================================================*/
// /*=====================================================================================================*/




































/* Includes ------------------------------------------------------------------*/
#include "stm32f4_system.h"
#include "stm32f4_sdio.h"

/** @addtogroup Utilities
* @{
*/ 

/** @addtogroup STM32_EVAL
* @{
*/ 

/** @addtogroup STM324xG_EVAL
* @{
*/

/** @addtogroup STM324xG_EVAL_SDIO_SD
* @brief      This file provides all the SD Card driver firmware functions.
* @{
*/ 

/** @defgroup STM324xG_EVAL_SDIO_SD_Private_Types
* @{
*/ 
/**
* @}
*/ 


/** @defgroup STM324xG_EVAL_SDIO_SD_Private_Defines
* @{
*/ 

/** 
* @brief  SDIO Static flags, TimeOut, FIFO Address  
*/
#define NULL 0
#define SDIO_STATIC_FLAGS               ((uint32_t)0x000005FF)
#define SDIO_CMD0TIMEOUT                ((uint32_t)0x00010000)

/** 
* @brief  Mask for errors Card Status R1 (OCR Register) 
*/
#define SD_OCR_ADDR_OUT_OF_RANGE        ((uint32_t)0x80000000)
#define SD_OCR_ADDR_MISALIGNED          ((uint32_t)0x40000000)
#define SD_OCR_BLOCK_LEN_ERR            ((uint32_t)0x20000000)
#define SD_OCR_ERASE_SEQ_ERR            ((uint32_t)0x10000000)
#define SD_OCR_BAD_ERASE_PARAM          ((uint32_t)0x08000000)
#define SD_OCR_WRITE_PROT_VIOLATION     ((uint32_t)0x04000000)
#define SD_OCR_LOCK_UNLOCK_FAILED       ((uint32_t)0x01000000)
#define SD_OCR_COM_CRC_FAILED           ((uint32_t)0x00800000)
#define SD_OCR_ILLEGAL_CMD              ((uint32_t)0x00400000)
#define SD_OCR_CARD_ECC_FAILED          ((uint32_t)0x00200000)
#define SD_OCR_CC_ERROR                 ((uint32_t)0x00100000)
#define SD_OCR_GENERAL_UNKNOWN_ERROR    ((uint32_t)0x00080000)
#define SD_OCR_STREAM_READ_UNDERRUN     ((uint32_t)0x00040000)
#define SD_OCR_STREAM_WRITE_OVERRUN     ((uint32_t)0x00020000)
#define SD_OCR_CID_CSD_OVERWRIETE       ((uint32_t)0x00010000)
#define SD_OCR_WP_ERASE_SKIP            ((uint32_t)0x00008000)
#define SD_OCR_CARD_ECC_DISABLED        ((uint32_t)0x00004000)
#define SD_OCR_ERASE_RESET              ((uint32_t)0x00002000)
#define SD_OCR_AKE_SEQ_ERROR            ((uint32_t)0x00000008)
#define SD_OCR_ERRORBITS                ((uint32_t)0xFDFFE008)

/** 
* @brief  Masks for R6 Response 
*/
#define SD_R6_GENERAL_UNKNOWN_ERROR     ((uint32_t)0x00002000)
#define SD_R6_ILLEGAL_CMD               ((uint32_t)0x00004000)
#define SD_R6_COM_CRC_FAILED            ((uint32_t)0x00008000)

#define SD_VOLTAGE_WINDOW_SD            ((uint32_t)0x80100000)
#define SD_HIGH_CAPACITY                ((uint32_t)0x40000000)
#define SD_STD_CAPACITY                 ((uint32_t)0x00000000)
#define SD_CHECK_PATTERN                ((uint32_t)0x000001AA)

#define SD_MAX_VOLT_TRIAL               ((uint32_t)0x0000FFFF)
#define SD_ALLZERO                      ((uint32_t)0x00000000)

#define SD_WIDE_BUS_SUPPORT             ((uint32_t)0x00040000)
#define SD_SINGLE_BUS_SUPPORT           ((uint32_t)0x00010000)
#define SD_CARD_LOCKED                  ((uint32_t)0x02000000)

#define SD_DATATIMEOUT                  ((uint32_t)0xFFFFFFFF)
#define SD_0TO7BITS                     ((uint32_t)0x000000FF)
#define SD_8TO15BITS                    ((uint32_t)0x0000FF00)
#define SD_16TO23BITS                   ((uint32_t)0x00FF0000)
#define SD_24TO31BITS                   ((uint32_t)0xFF000000)
#define SD_MAX_DATA_LENGTH              ((uint32_t)0x01FFFFFF)

#define SD_HALFFIFO                     ((uint32_t)0x00000008)
#define SD_HALFFIFOBYTES                ((uint32_t)0x00000020)

/** 
* @brief  Command Class Supported 
*/
#define SD_CCCC_LOCK_UNLOCK             ((uint32_t)0x00000080)
#define SD_CCCC_WRITE_PROT              ((uint32_t)0x00000040)
#define SD_CCCC_ERASE                   ((uint32_t)0x00000020)

/** 
* @brief  Following commands are SD Card Specific commands.
*         SDIO_APP_CMD should be sent before sending these commands. 
*/
#define SDIO_SEND_IF_COND               ((uint32_t)0x00000008)

/**
* @}
*/ 

/** @defgroup STM324xG_EVAL_SDIO_SD_Private_Macros
* @{
*/
/**
* @}
*/ 

/** @defgroup STM324xG_EVAL_SDIO_SD_Private_Variables
* @{
*/
static uint32_t CardType =  SDIO_STD_CAPACITY_SD_CARD_V1_1;
static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0;
static uint32_t DeviceMode = SD_POLLING_MODE;
static uint32_t TotalNumberOfBytes = 0, StopCondition = 0;
static uint8_t SDSTATUS_Tab[16];

__IO SD_Error TransferError = SD_OK;
__IO uint32_t TransferEnd = 0, DMAEndOfTransfer = 0;
SD_CardInfo SDCardInfo;

SDIO_InitTypeDef SDIO_InitStructure;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_DataInitTypeDef SDIO_DataInitStructure;
/**
* @}
*/ 


/** @defgroup STM324xG_EVAL_SDIO_SD_Private_Function_Prototypes
* @{
*/
static SD_Error CmdError(void);
static SD_Error CmdResp1Error(uint8_t cmd);
static SD_Error CmdResp7Error(void);
static SD_Error CmdResp3Error(void);
static SD_Error CmdResp2Error(void);
static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca);
static SD_Error SDEnWideBus(FunctionalState NewState);
static SD_Error IsCardProgramming(uint8_t *pstatus);
static SD_Error FindSCR(uint16_t rca, uint32_t *pscr);
uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);

/**
* @}
*/ 

/**
* @brief  Configures SDIO IRQ channel.
* @param  None
* @retval None
*/
void SDIO_NVIC_Configuration(void)
{
	NVIC_InitTypeDef NVIC_InitStructure;
	
	/* Configure the NVIC Preemption Priority Bits */
	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
	NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);
	NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream3_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
	NVIC_Init(&NVIC_InitStructure);  
}

void SD_LowLevel_DeInit(void)
{
	GPIO_InitTypeDef  GPIO_InitStructure;
	
	/*!< Disable SDIO Clock */
	SDIO_ClockCmd(DISABLE);
	
	/*!< Set Power State to OFF */
	SDIO_SetPowerState(SDIO_PowerState_OFF);
	
	/*!< DeInitializes the SDIO peripheral */
	SDIO_DeInit();
	
	/* Disable the SDIO APB2 Clock */
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_SDIO, DISABLE);
	
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource8, GPIO_AF_MCO);
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource9, GPIO_AF_MCO);
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource10, GPIO_AF_MCO);
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource11, GPIO_AF_MCO);
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_MCO);
	GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_MCO);
	
	/* Configure PC.08, PC.09, PC.10, PC.11 pins: D0, D1, D2, D3 pins */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_Init(GPIOC, &GPIO_InitStructure);
	
	/* Configure PD.02 CMD line */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
	GPIO_Init(GPIOD, &GPIO_InitStructure);
	
	/* Configure PC.12 pin: CLK pin */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
	GPIO_Init(GPIOC, &GPIO_InitStructure);
}

/**
* @brief  Initializes the SD Card and put it into StandBy State (Ready for 
*         data transfer).
* @param  None
* @retval None
*/
void SD_LowLevel_Init(void)
{
	GPIO_InitTypeDef  GPIO_InitStructure;
	
	/* GPIOC and GPIOD Periph clock enable */
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD, ENABLE);
	
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource8, GPIO_AF_SDIO);
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource9, GPIO_AF_SDIO);
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource10, GPIO_AF_SDIO);
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource11, GPIO_AF_SDIO);
	GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_SDIO);
	GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_SDIO);
	
	/* Configure PC.08, PC.09, PC.10, PC.11 pins: D0, D1, D2, D3 pins */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
	GPIO_Init(GPIOC, &GPIO_InitStructure);
	
	/* Configure PD.02 CMD line */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
	GPIO_Init(GPIOD, &GPIO_InitStructure);
	
	/* Configure PC.12 pin: CLK pin */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_Init(GPIOC, &GPIO_InitStructure);
	
	/* Enable the SDIO APB2 Clock */
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_SDIO, ENABLE);
	
	/* Enable the DMA2 Clock */
	RCC_AHB1PeriphClockCmd(SD_SDIO_DMA_CLK, ENABLE);
}

/**
* @brief  Configures the DMA2 Channel4 for SDIO Tx request.
* @param  BufferSRC: pointer to the source buffer
* @param  BufferSize: buffer size
* @retval None
*/
void SD_LowLevel_DMA_TxConfig(uint32_t *BufferSRC, uint32_t BufferSize)
{
	DMA_InitTypeDef SDDMA_InitStructure;
	
	DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_FEIF | SD_SDIO_DMA_FLAG_DMEIF | SD_SDIO_DMA_FLAG_TEIF | SD_SDIO_DMA_FLAG_HTIF | SD_SDIO_DMA_FLAG_TCIF);
	
	/* DMA2 Stream3  or Stream6 disable */
	DMA_Cmd(SD_SDIO_DMA_STREAM, DISABLE);
	
	/* DMA2 Stream3  or Stream6 Config */
	DMA_DeInit(SD_SDIO_DMA_STREAM);
	
	SDDMA_InitStructure.DMA_Channel = SD_SDIO_DMA_CHANNEL;
	SDDMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_ADDRESS;
	SDDMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)BufferSRC;
	SDDMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
	SDDMA_InitStructure.DMA_BufferSize = 0;
	SDDMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
	SDDMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
	SDDMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
	SDDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
	SDDMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
	SDDMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
	SDDMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
	SDDMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
	SDDMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC4;
	SDDMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_INC4;
	DMA_Init(SD_SDIO_DMA_STREAM, &SDDMA_InitStructure);
	DMA_ITConfig(SD_SDIO_DMA_STREAM, DMA_IT_TC, ENABLE);
	DMA_FlowControllerConfig(SD_SDIO_DMA_STREAM, DMA_FlowCtrl_Peripheral);
	
	/* DMA2 Stream3  or Stream6 enable */
	DMA_Cmd(SD_SDIO_DMA_STREAM, ENABLE);
    
}

/**
* @brief  Configures the DMA2 Channel4 for SDIO Rx request.
* @param  BufferDST: pointer to the destination buffer
* @param  BufferSize: buffer size
* @retval None
*/
void SD_LowLevel_DMA_RxConfig(uint32_t *BufferDST, uint32_t BufferSize)
{
	DMA_InitTypeDef SDDMA_InitStructure;
	
	DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_FEIF | SD_SDIO_DMA_FLAG_DMEIF | SD_SDIO_DMA_FLAG_TEIF | SD_SDIO_DMA_FLAG_HTIF | SD_SDIO_DMA_FLAG_TCIF);
	
	/* DMA2 Stream3  or Stream6 disable */
	DMA_Cmd(SD_SDIO_DMA_STREAM, DISABLE);
	
	/* DMA2 Stream3 or Stream6 Config */
	DMA_DeInit(SD_SDIO_DMA_STREAM);
	
	SDDMA_InitStructure.DMA_Channel = SD_SDIO_DMA_CHANNEL;
	SDDMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_ADDRESS;
	SDDMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)BufferDST;
	SDDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
	SDDMA_InitStructure.DMA_BufferSize = 0;
	SDDMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
	SDDMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
	SDDMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
	SDDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
	SDDMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
	SDDMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
	SDDMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
	SDDMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
	SDDMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC4;
	SDDMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_INC4;
	DMA_Init(SD_SDIO_DMA_STREAM, &SDDMA_InitStructure);
	DMA_ITConfig(SD_SDIO_DMA_STREAM, DMA_IT_TC, ENABLE);
	DMA_FlowControllerConfig(SD_SDIO_DMA_STREAM, DMA_FlowCtrl_Peripheral);
	
	/* DMA2 Stream3 or Stream6 enable */
	DMA_Cmd(SD_SDIO_DMA_STREAM, ENABLE);
}

/**
* @brief  DeInitializes the SDIO interface.
* @param  None
* @retval None
*/
void SD_DeInit(void)
{ 
	SD_LowLevel_DeInit();
}

/**
* @brief  Initializes the SD Card and put it into StandBy State (Ready for data 
*         transfer).
* @param  None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_Init(void)
{
	__IO SD_Error errorstatus = SD_OK;
	
	/* SDIO Peripheral Low Level Init */
	SDIO_NVIC_Configuration();
	
	SD_LowLevel_Init();
	
	SDIO_DeInit();
	
	errorstatus = SD_PowerON();

	if (errorstatus != SD_OK)
	{
		/*!< CMD Response TimeOut (wait for CMDSENT flag) */
		return(errorstatus);
	}

	errorstatus = SD_InitializeCards();
	
	if (errorstatus != SD_OK)
	{
		/*!< CMD Response TimeOut (wait for CMDSENT flag) */
		return(errorstatus);
	}
	
	/*!< Configure the SDIO peripheral */
	/*!< SDIO_CK = SDIOCLK / (SDIO_TRANSFER_CLK_DIV + 2) */
	/*!< on STM32F4xx devices, SDIOCLK is fixed to 48MHz */
	SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
	SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
	SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
	SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
	SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
	SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Enable;
	SDIO_Init(&SDIO_InitStructure);
	
	/*----------------- Read CSD/CID MSD registers ------------------*/
	errorstatus = SD_GetCardInfo(&SDCardInfo);
	if (errorstatus == SD_OK)
	{
		/*----------------- Select Card --------------------------------*/
		errorstatus = SD_SelectDeselect((uint32_t) (SDCardInfo.RCA << 16));
	}
	if (errorstatus == SD_OK)
	{
		errorstatus = SD_EnableWideBusOperation(SDIO_BusWide_4b);
	}  
	
	return(errorstatus);
}

/**
* @brief  Gets the cuurent sd card data transfer status.
* @param  None
* @retval SDTransferState: Data Transfer state.
*   This value can be: 
*        - SD_TRANSFER_OK: No data transfer is acting
*        - SD_TRANSFER_BUSY: Data transfer is acting
*/
SDTransferState SD_GetStatus(void)
{
	SDCardState cardstate =  SD_CARD_TRANSFER;
	
	cardstate = SD_GetState();
	
	if (cardstate == SD_CARD_TRANSFER)
	{
		return(SD_TRANSFER_OK);
	}
	else if(cardstate == SD_CARD_ERROR)
	{
		return (SD_TRANSFER_ERROR);
	}
	else
	{
		return(SD_TRANSFER_BUSY);
	}
}

/**
* @brief  Returns the current card's state.
* @param  None
* @retval SDCardState: SD Card Error or SD Card Current State.
*/
SDCardState SD_GetState(void)
{
	uint32_t resp1 = 0;
	
	if(SD_Detect()== SD_PRESENT)
	{
		if (SD_SendStatus(&resp1) != SD_OK)
		{
			return SD_CARD_ERROR;
		}
		else
		{
			return (SDCardState)((resp1 >> 9) & 0x0F);
		}
	}
	else
	{
		return SD_CARD_ERROR;
	}
}

/**
* @brief  Detect if SD card is correctly plugged in the memory slot.
* @param  None
* @retval Return if SD is detected or not
*/
uint8_t SD_Detect(void)//檢測SD是否插入
{
	__IO uint8_t status = SD_PRESENT;
	
	/*!< Check GPIO to detect SD */
	//  if (GPIO_ReadInputDataBit(SD_DETECT_GPIO_PORT, SD_DETECT_PIN) != Bit_RESET)
	//  {
	//    status = SD_NOT_PRESENT;
	//  }
	return status;
}

/**
* @brief  Enquires cards about their operating voltage and configures 
*   clock controls.
* @param  None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_PowerON(void)
{
	__IO SD_Error errorstatus = SD_OK;
	uint32_t response = 0, count = 0, validvoltage = 0;
	uint32_t SDType = SD_STD_CAPACITY;
	
	/*!< Power ON Sequence -----------------------------------------------------*/
	/*!< Configure the SDIO peripheral */
	/*!< SDIO_CK = SDIOCLK / (SDIO_INIT_CLK_DIV + 2) */
	/*!< on STM32F4xx devices, SDIOCLK is fixed to 48MHz */
	/*!< SDIO_CK for initialization should not exceed 400 KHz */  
	SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV;
	SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
	SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
	SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
	SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
	SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
	SDIO_Init(&SDIO_InitStructure);
	
	/*!< Set Power State to ON */
	SDIO_SetPowerState(SDIO_PowerState_ON);
	
	/*!< Enable SDIO Clock */
	SDIO_ClockCmd(ENABLE);
	
	/*!< CMD0: GO_IDLE_STATE ---------------------------------------------------*/
	/*!< No CMD response required */
	SDIO_CmdInitStructure.SDIO_Argument = 0x0;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_GO_IDLE_STATE;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdError();
	
	if (errorstatus != SD_OK)
	{
		/*!< CMD Response TimeOut (wait for CMDSENT flag) */
		return(errorstatus);
	}
	
	/*!< CMD8: SEND_IF_COND ----------------------------------------------------*/
	/*!< Send CMD8 to verify SD card interface operating condition */
	/*!< Argument: - [31:12]: Reserved (shall be set to '0')
	- [11:8]: Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)
	- [7:0]: Check Pattern (recommended 0xAA) */
	/*!< CMD Response: R7 */
	SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp7Error();
	
	if (errorstatus == SD_OK)
	{
		CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; /*!< SD Card 2.0 */
		SDType = SD_HIGH_CAPACITY;
	}
	else
	{
		/*!< CMD55 */
		SDIO_CmdInitStructure.SDIO_Argument = 0x00;
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
	}
	/*!< CMD55 */
	SDIO_CmdInitStructure.SDIO_Argument = 0x00;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
	
	/*!< If errorstatus is Command TimeOut, it is a MMC card */
	/*!< If errorstatus is SD_OK it is a SD card: SD card 2.0 (voltage range mismatch)
	or SD card 1.x */
	if (errorstatus == SD_OK)
	{
		/*!< SD CARD */
		/*!< Send ACMD41 SD_APP_OP_COND with Argument 0x80100000 */
		while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
		{
			
			/*!< SEND CMD55 APP_CMD with RCA as 0 */
			SDIO_CmdInitStructure.SDIO_Argument = 0x00;
			SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
			SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
			SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
			SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
			SDIO_SendCommand(&SDIO_CmdInitStructure);
			
			errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
			
			if (errorstatus != SD_OK)
			{
				return(errorstatus);
			}
			SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;
			SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_OP_COND;
			SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
			SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
			SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
			SDIO_SendCommand(&SDIO_CmdInitStructure);
			
			errorstatus = CmdResp3Error();
			if (errorstatus != SD_OK)
			{
				return(errorstatus);
			}
			
			response = SDIO_GetResponse(SDIO_RESP1);
			validvoltage = (((response >> 31) == 1) ? 1 : 0);
			count++;
		}
		if (count >= SD_MAX_VOLT_TRIAL)
		{
			errorstatus = SD_INVALID_VOLTRANGE;
			return(errorstatus);
		}
		
		if (response &= SD_HIGH_CAPACITY)
		{
			CardType = SDIO_HIGH_CAPACITY_SD_CARD;
		}
		
	}/*!< else MMC Card */
	
	return(errorstatus);
}

/**
* @brief  Turns the SDIO output signals off.
* @param  None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_PowerOFF(void)
{
	SD_Error errorstatus = SD_OK;
	
	/*!< Set Power State to OFF */
	SDIO_SetPowerState(SDIO_PowerState_OFF);
	
	return(errorstatus);
}

/**
* @brief  Intialises all cards or single card as the case may be Card(s) come 
*         into standby state.
* @param  None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_InitializeCards(void)
{
	SD_Error errorstatus = SD_OK;
	uint16_t rca = 0x01;
	
	if (SDIO_GetPowerState() == SDIO_PowerState_OFF)
	{
		errorstatus = SD_REQUEST_NOT_APPLICABLE;
		return(errorstatus);
	}
	
	if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
	{
		/*!< Send CMD2 ALL_SEND_CID */
		SDIO_CmdInitStructure.SDIO_Argument = 0x0;
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ALL_SEND_CID;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp2Error();
		
		if (SD_OK != errorstatus)
		{
			return(errorstatus);
		}
		
		CID_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
		CID_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
		CID_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
		CID_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
	}
	if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) ||  (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) ||  (SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType)
		||  (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
	{
		/*!< Send CMD3 SET_REL_ADDR with argument 0 */
		/*!< SD Card publishes its RCA. */
		SDIO_CmdInitStructure.SDIO_Argument = 0x00;
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_REL_ADDR;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp6Error(SD_CMD_SET_REL_ADDR, &rca);
		
		if (SD_OK != errorstatus)
		{
			return(errorstatus);
		}
	}
	
	if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
	{
		RCA = rca;
		
		/*!< Send CMD9 SEND_CSD with argument as card's RCA */
		SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_CSD;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp2Error();
		
		if (SD_OK != errorstatus)
		{
			return(errorstatus);
		}
		
		CSD_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
		CSD_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
		CSD_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
		CSD_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
	}
	
	errorstatus = SD_OK; /*!< All cards get intialized */
	
	return(errorstatus);
}

/**
* @brief  Returns information about specific card.
* @param  cardinfo: pointer to a SD_CardInfo structure that contains all SD card 
*         information.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)
{
	SD_Error errorstatus = SD_OK;
	uint8_t tmp = 0;
	
	cardinfo->CardType = (uint8_t)CardType;
	cardinfo->RCA = (uint16_t)RCA;
	
	/*!< Byte 0 */
	tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);
	cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;
	cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;
	cardinfo->SD_csd.Reserved1 = tmp & 0x03;
	
	/*!< Byte 1 */
	tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);
	cardinfo->SD_csd.TAAC = tmp;
	
	/*!< Byte 2 */
	tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);
	cardinfo->SD_csd.NSAC = tmp;
	
	/*!< Byte 3 */
	tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);
	cardinfo->SD_csd.MaxBusClkFrec = tmp;
	
	/*!< Byte 4 */
	tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);
	cardinfo->SD_csd.CardComdClasses = tmp << 4;
	
	/*!< Byte 5 */
	tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);
	cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
	cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;
	
	/*!< Byte 6 */
	tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);
	cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;
	cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;
	cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;
	cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;
	cardinfo->SD_csd.Reserved2 = 0; /*!< Reserved */
	
	if ((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))
	{
		cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;
		
		/*!< Byte 7 */
		tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
		cardinfo->SD_csd.DeviceSize |= (tmp) << 2;
		
		/*!< Byte 8 */
		tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
		cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;
		
		cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;
		cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);
		
		/*!< Byte 9 */
		tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
		cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;
		cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;
		cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;
		/*!< Byte 10 */
		tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
		cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
		
		cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;
		cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
		cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);
		cardinfo->CardCapacity *= cardinfo->CardBlockSize;
	}
	else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
	{
		/*!< Byte 7 */
		tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
		cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;
		
		/*!< Byte 8 */
		tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
		
		cardinfo->SD_csd.DeviceSize |= (tmp << 8);
		
		/*!< Byte 9 */
		tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
		
		cardinfo->SD_csd.DeviceSize |= (tmp);
		
		/*!< Byte 10 */
		tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
		
		cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;
		cardinfo->CardBlockSize = 512;    
	}
	
	
	cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
	cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;
	
	/*!< Byte 11 */
	tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);
	cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
	cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);
	
	/*!< Byte 12 */
	tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);
	cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;
	cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;
	cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;
	cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;
	
	/*!< Byte 13 */
	tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);
	cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;
	cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;
	cardinfo->SD_csd.Reserved3 = 0;
	cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);
	
	/*!< Byte 14 */
	tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);
	cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;
	cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;
	cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;
	cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;
	cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;
	cardinfo->SD_csd.ECC = (tmp & 0x03);
	
	/*!< Byte 15 */
	tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);
	cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
	cardinfo->SD_csd.Reserved4 = 1;
	
	
	/*!< Byte 0 */
	tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);
	cardinfo->SD_cid.ManufacturerID = tmp;
	
	/*!< Byte 1 */
	tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);
	cardinfo->SD_cid.OEM_AppliID = tmp << 8;
	
	/*!< Byte 2 */
	tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);
	cardinfo->SD_cid.OEM_AppliID |= tmp;
	
	/*!< Byte 3 */
	tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);
	cardinfo->SD_cid.ProdName1 = tmp << 24;
	
	/*!< Byte 4 */
	tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);
	cardinfo->SD_cid.ProdName1 |= tmp << 16;
	
	/*!< Byte 5 */
	tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);
	cardinfo->SD_cid.ProdName1 |= tmp << 8;
	
	/*!< Byte 6 */
	tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);
	cardinfo->SD_cid.ProdName1 |= tmp;
	
	/*!< Byte 7 */
	tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);
	cardinfo->SD_cid.ProdName2 = tmp;
	
	/*!< Byte 8 */
	tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);
	cardinfo->SD_cid.ProdRev = tmp;
	
	/*!< Byte 9 */
	tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);
	cardinfo->SD_cid.ProdSN = tmp << 24;
	
	/*!< Byte 10 */
	tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);
	cardinfo->SD_cid.ProdSN |= tmp << 16;
	
	/*!< Byte 11 */
	tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);
	cardinfo->SD_cid.ProdSN |= tmp << 8;
	
	/*!< Byte 12 */
	tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);
	cardinfo->SD_cid.ProdSN |= tmp;
	
	/*!< Byte 13 */
	tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);
	cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
	cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;
	
	/*!< Byte 14 */
	tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);
	cardinfo->SD_cid.ManufactDate |= tmp;
	
	/*!< Byte 15 */
	tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);
	cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
	cardinfo->SD_cid.Reserved2 = 1;
	
	return(errorstatus);
}

/**
* @brief  Enables wide bus opeartion for the requeseted card if supported by 
*         card.
* @param  WideMode: Specifies the SD card wide bus mode. 
*   This parameter can be one of the following values:
*     @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
*     @arg SDIO_BusWide_4b: 4-bit data transfer
*     @arg SDIO_BusWide_1b: 1-bit data transfer
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_GetCardStatus(SD_CardStatus *cardstatus)
{
	SD_Error errorstatus = SD_OK;
	uint8_t tmp = 0;
	
	errorstatus = SD_SendSDStatus((uint32_t *)SDSTATUS_Tab);
	
	if (errorstatus  != SD_OK)
	{
		return(errorstatus);
	}
	
	/*!< Byte 0 */
	tmp = (uint8_t)((SDSTATUS_Tab[0] & 0xC0) >> 6);
	cardstatus->DAT_BUS_WIDTH = tmp;
	
	/*!< Byte 0 */
	tmp = (uint8_t)((SDSTATUS_Tab[0] & 0x20) >> 5);
	cardstatus->SECURED_MODE = tmp;
	
	/*!< Byte 2 */
	tmp = (uint8_t)((SDSTATUS_Tab[2] & 0xFF));
	cardstatus->SD_CARD_TYPE = tmp << 8;
	
	/*!< Byte 3 */
	tmp = (uint8_t)((SDSTATUS_Tab[3] & 0xFF));
	cardstatus->SD_CARD_TYPE |= tmp;
	
	/*!< Byte 4 */
	tmp = (uint8_t)(SDSTATUS_Tab[4] & 0xFF);
	cardstatus->SIZE_OF_PROTECTED_AREA = tmp << 24;
	
	/*!< Byte 5 */
	tmp = (uint8_t)(SDSTATUS_Tab[5] & 0xFF);
	cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 16;
	
	/*!< Byte 6 */
	tmp = (uint8_t)(SDSTATUS_Tab[6] & 0xFF);
	cardstatus->SIZE_OF_PROTECTED_AREA |= tmp << 8;
	
	/*!< Byte 7 */
	tmp = (uint8_t)(SDSTATUS_Tab[7] & 0xFF);
	cardstatus->SIZE_OF_PROTECTED_AREA |= tmp;
	
	/*!< Byte 8 */
	tmp = (uint8_t)((SDSTATUS_Tab[8] & 0xFF));
	cardstatus->SPEED_CLASS = tmp;
	
	/*!< Byte 9 */
	tmp = (uint8_t)((SDSTATUS_Tab[9] & 0xFF));
	cardstatus->PERFORMANCE_MOVE = tmp;
	
	/*!< Byte 10 */
	tmp = (uint8_t)((SDSTATUS_Tab[10] & 0xF0) >> 4);
	cardstatus->AU_SIZE = tmp;
	
	/*!< Byte 11 */
	tmp = (uint8_t)(SDSTATUS_Tab[11] & 0xFF);
	cardstatus->ERASE_SIZE = tmp << 8;
	
	/*!< Byte 12 */
	tmp = (uint8_t)(SDSTATUS_Tab[12] & 0xFF);
	cardstatus->ERASE_SIZE |= tmp;
	
	/*!< Byte 13 */
	tmp = (uint8_t)((SDSTATUS_Tab[13] & 0xFC) >> 2);
	cardstatus->ERASE_TIMEOUT = tmp;
	
	/*!< Byte 13 */
	tmp = (uint8_t)((SDSTATUS_Tab[13] & 0x3));
	cardstatus->ERASE_OFFSET = tmp;
	
	return(errorstatus);
}

/**
* @brief  Enables wide bus opeartion for the requeseted card if supported by 
*         card.
* @param  WideMode: Specifies the SD card wide bus mode. 
*   This parameter can be one of the following values:
*     @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
*     @arg SDIO_BusWide_4b: 4-bit data transfer
*     @arg SDIO_BusWide_1b: 1-bit data transfer
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_EnableWideBusOperation(uint32_t WideMode)
{
	SD_Error errorstatus = SD_OK;
	
	/*!< MMC Card doesn't support this feature */
	if (SDIO_MULTIMEDIA_CARD == CardType)
	{
		errorstatus = SD_UNSUPPORTED_FEATURE;
		return(errorstatus);
	}
	else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
	{
		if (SDIO_BusWide_8b == WideMode)
		{
			errorstatus = SD_UNSUPPORTED_FEATURE;
			return(errorstatus);
		}
		else if (SDIO_BusWide_4b == WideMode)
		{
			errorstatus = SDEnWideBus(ENABLE);
			
			if (SD_OK == errorstatus)
			{
				/*!< Configure the SDIO peripheral */
				SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV; 
				SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
				SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
				SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
				SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_4b;
				SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
				SDIO_Init(&SDIO_InitStructure);
			}
		}
		else
		{
			errorstatus = SDEnWideBus(DISABLE);
			
			if (SD_OK == errorstatus)
			{
				/*!< Configure the SDIO peripheral */
				SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV; 
				SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
				SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
				SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
				SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
				SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
				SDIO_Init(&SDIO_InitStructure);
			}
		}
	}
	
	return(errorstatus);
}

/**
* @brief  Selects od Deselects the corresponding card.
* @param  addr: Address of the Card to be selected.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_SelectDeselect(uint32_t addr)
{
	SD_Error errorstatus = SD_OK;
	
	/*!< Send CMD7 SDIO_SEL_DESEL_CARD */
	SDIO_CmdInitStructure.SDIO_Argument =  addr;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEL_DESEL_CARD;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_SEL_DESEL_CARD);
	
	return(errorstatus);
}

/**
* @brief  Allows to read one block from a specified address in a card. The Data
*         transfer can be managed by DMA mode or Polling mode. 
* @note   This operation should be followed by two functions to check if the 
*         DMA Controller and SD Card status.
*          - SD_ReadWaitOperation(): this function insure that the DMA
*            controller has finished all data transfer.
*          - SD_GetStatus(): to check that the SD Card has finished the 
*            data transfer and it is ready for data.            
* @param  readbuff: pointer to the buffer that will contain the received data
* @param  ReadAddr: Address from where data are to be read.  
* @param  BlockSize: the SD card Data block size. The Block size should be 512.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ReadBlock(uint8_t *readbuff, uint32_t ReadAddr, uint16_t BlockSize)
{
	SD_Error errorstatus = SD_OK;
#if defined (SD_POLLING_MODE) 
	uint32_t count = 0, *tempbuff = (uint32_t *)readbuff;
#endif
	
	TransferError = SD_OK;
	TransferEnd = 0;
	StopCondition = 0;
	
	SDIO->DCTRL = 0x0;
	
	
	if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
	{
		BlockSize = 512;
		ReadAddr /= 512;
	}
	
	/* Set Block Size for Card */ 
	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
	
	if (SD_OK != errorstatus)
	{
		return(errorstatus);
	}
	
	SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
	SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
	SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
	SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
	SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
	SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
	SDIO_DataConfig(&SDIO_DataInitStructure);
	
	/*!< Send CMD17 READ_SINGLE_BLOCK */
	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_SINGLE_BLOCK;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_READ_SINGLE_BLOCK);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
#if defined (SD_POLLING_MODE)  
	/*!< In case of single block transfer, no need of stop transfer at all.*/
	/*!< Polling mode */
	while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
	{
		if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
		{
			for (count = 0; count < 8; count++)
			{
				*(tempbuff + count) = SDIO_ReadData();
			}
			tempbuff += 8;
		}
	}
	
	if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
		errorstatus = SD_DATA_TIMEOUT;
		return(errorstatus);
	}
	else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
		errorstatus = SD_DATA_CRC_FAIL;
		return(errorstatus);
	}
	else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
		errorstatus = SD_RX_OVERRUN;
		return(errorstatus);
	}
	else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_STBITERR);
		errorstatus = SD_START_BIT_ERR;
		return(errorstatus);
	}
	count = SD_DATATIMEOUT;
	while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) && (count > 0))
	{
		*tempbuff = SDIO_ReadData();
		tempbuff++;
		count--;
	}
	
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
#elif defined (SD_DMA_MODE)
    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
    SDIO_DMACmd(ENABLE);
    SD_LowLevel_DMA_RxConfig((uint32_t *)readbuff, BlockSize);
#endif
	
	return(errorstatus);
}

/**
* @brief  Allows to read blocks from a specified address  in a card.  The Data
*         transfer can be managed by DMA mode or Polling mode. 
* @note   This operation should be followed by two functions to check if the 
*         DMA Controller and SD Card status.
*          - SD_ReadWaitOperation(): this function insure that the DMA
*            controller has finished all data transfer.
*          - SD_GetStatus(): to check that the SD Card has finished the 
*            data transfer and it is ready for data.   
* @param  readbuff: pointer to the buffer that will contain the received data.
* @param  ReadAddr: Address from where data are to be read.
* @param  BlockSize: the SD card Data block size. The Block size should be 512.
* @param  NumberOfBlocks: number of blocks to be read.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ReadMultiBlocks(uint8_t *readbuff, uint32_t ReadAddr, uint16_t BlockSize, uint32_t NumberOfBlocks)
{
	// 	uint32_t  *tempbuff;
	// 	SD_Error errorstatus = SD_OK;
	// 	TransferError = SD_OK;
	// 	TransferEnd = 0;
	// 	StopCondition = 1;
	// 	
	// 	SDIO->DCTRL = 0x0;
	// 	
	// 	if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
	// 	{
	// 		BlockSize = 512;
	// 		ReadAddr /= 512;
	// 	}
	// 	
	// 	/*!< Set Block Size for Card */
	// 	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
	// 	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
	// 	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	// 	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	// 	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	// 	SDIO_SendCommand(&SDIO_CmdInitStructure);
	// 	
	// 	errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
	// 	
	// 	if (SD_OK != errorstatus)
	// 	{
	// 		return(errorstatus);
	// 	}
	//     
	// 	SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
	// 	SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
	// 	SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
	// 	SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
	// 	SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
	// 	SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
	// 	SDIO_DataConfig(&SDIO_DataInitStructure);
	// 	
	// 	/*!< Send CMD18 READ_MULT_BLOCK with argument data address */
	// 	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr;
	// 	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_MULT_BLOCK;
	// 	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	// 	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	// 	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	// 	SDIO_SendCommand(&SDIO_CmdInitStructure);
	// 	
	// 	errorstatus = CmdResp1Error(SD_CMD_READ_MULT_BLOCK);
	// 	
	// 	if (errorstatus != SD_OK)
	// 	{
	// 		return(errorstatus);
	// 	}
	// 	tempbuff = (uint32_t *)readbuff;
	// 	SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
	// 	SDIO_DMACmd(ENABLE);
	// 	SD_LowLevel_DMA_RxConfig(tempbuff, (NumberOfBlocks * BlockSize));
	// 	
	// 	return(errorstatus);
	
	SD_Error errorstatus = SD_OK;
	uint32_t count = 0; 
	uint32_t  *tempbuff;
	uint8_t power = 0;
	
	if (NULL == readbuff)
	{
		errorstatus = SD_INVALID_PARAMETER;
		return(errorstatus);
	}
	
	TransferError = SD_OK;
	TransferEnd = 0;
	TotalNumberOfBytes = 0;
	
	/* Clear all DPSM configuration */
	SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
	SDIO_DataInitStructure.SDIO_DataLength = 0;
	SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
	SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
	SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
	SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
	SDIO_DataConfig(&SDIO_DataInitStructure);
	SDIO_DMACmd(DISABLE);
	
	if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
	{
		errorstatus = SD_LOCK_UNLOCK_FAILED;
		return(errorstatus);
	}
	if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
	{
		BlockSize = 512;
		ReadAddr /= 512;
	}
	
	/* Set the block size, both on controller and card */
	if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
	{
		power = convert_from_bytes_to_power_of_two(BlockSize);
		
		SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
		
		if (errorstatus != SD_OK)
		{
			return(errorstatus);
		}
	}
	else
	{
		errorstatus = SD_INVALID_PARAMETER;
		return(errorstatus);
	}
	
	if (NumberOfBlocks > 1)
	{
		/* Common to all modes */
		if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
		{
			errorstatus = SD_INVALID_PARAMETER;
			return(errorstatus);
		}
		
		TotalNumberOfBytes = NumberOfBlocks * BlockSize;
		StopCondition = 1;
		tempbuff = (uint32_t *)readbuff;
		
		SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
		SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
		SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
		SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
		SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
		SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
		SDIO_DataConfig(&SDIO_DataInitStructure);
		
		/* Send CMD18 READ_MULT_BLOCK with argument data address */
		SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)ReadAddr;
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_READ_MULT_BLOCK;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp1Error(SD_CMD_READ_MULT_BLOCK);
		
		if (errorstatus != SD_OK)
		{
			return(errorstatus);
		}
		
		if (DeviceMode == SD_POLLING_MODE)
		{
			/* Polling mode */
			while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
			{
				if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
				{
					for (count = 0; count < SD_HALFFIFO; count++)
					{
						*(tempbuff + count) = SDIO_ReadData();
					}
					tempbuff += SD_HALFFIFO;
				}
			}
			
			if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
			{
				SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
				errorstatus = SD_DATA_TIMEOUT;
				return(errorstatus);
			}
			else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
			{
				SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
				errorstatus = SD_DATA_CRC_FAIL;
				return(errorstatus);
			}
			else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
			{
				SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
				errorstatus = SD_RX_OVERRUN;
				return(errorstatus);
			}
			else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
			{
				SDIO_ClearFlag(SDIO_FLAG_STBITERR);
				errorstatus = SD_START_BIT_ERR;
				return(errorstatus);
			}
			while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
			{
				*tempbuff = SDIO_ReadData();
				tempbuff++;
			}
			
			if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
			{
				/* In Case Of SD-CARD Send Command STOP_TRANSMISSION */
				if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType))
				{
					/* Send CMD12 STOP_TRANSMISSION */
					SDIO_CmdInitStructure.SDIO_Argument = 0x0;
					SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION;
					SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
					SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
					SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
					SDIO_SendCommand(&SDIO_CmdInitStructure);
					
					errorstatus = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);
					
					if (errorstatus != SD_OK)
					{
						return(errorstatus);
					}
				}
			}
			/* Clear all the static flags */
			SDIO_ClearFlag(SDIO_STATIC_FLAGS);
		}
		else if (DeviceMode == SD_INTERRUPT_MODE)
		{
			// 			SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);
			// 			while ((TransferEnd == 0) && (TransferError == SD_OK))
			// 			{}
			// 			if (TransferError != SD_OK)
			// 			{
			// 				return(TransferError);
			// 			}
		}
		else if (DeviceMode == SD_DMA_MODE)
		{
			// 			SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
			// 			SDIO_DMACmd(ENABLE);
			// 			DMA_RxConfiguration(readbuff, (NumberOfBlocks * BlockSize));
			// 			while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
			// 			{}
			// 			while ((TransferEnd == 0) && (TransferError == SD_OK))
			// 			{}
			// 			if (TransferError != SD_OK)
			// 			{
			// 				return(TransferError);
			// 			}
		}
    }
	return(errorstatus);
}

/**
* @brief  This function waits until the SDIO DMA data transfer is finished. 
*         This function should be called after SDIO_ReadMultiBlocks() function
*         to insure that all data sent by the card are already transferred by 
*         the DMA controller.
* @param  None.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WaitReadOperation(void)
{
	SD_Error errorstatus = SD_OK;
	uint32_t timeout;
	
	timeout = SD_DATATIMEOUT;
	
	while ((DMAEndOfTransfer == 0x00) && (TransferEnd == 0) && (TransferError == SD_OK) && (timeout > 0))
	{
		timeout--;
	}
	
	DMAEndOfTransfer = 0x00;
	
	timeout = SD_DATATIMEOUT;
	
	while(((SDIO->STA & SDIO_FLAG_RXACT)) && (timeout > 0))
	{
		timeout--;  
	}
	
	if (StopCondition == 1)
	{
		errorstatus = SD_StopTransfer();
	}
	
	if ((timeout == 0) && (errorstatus == SD_OK))
	{
		errorstatus = SD_DATA_TIMEOUT;
	}
	
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
	if (TransferError != SD_OK)
	{
		return(TransferError);
	}
	else
	{
		return(errorstatus);  
	}
}

/**
* @brief  Allows to write one block starting from a specified address in a card.
*         The Data transfer can be managed by DMA mode or Polling mode.
* @note   This operation should be followed by two functions to check if the 
*         DMA Controller and SD Card status.
*          - SD_ReadWaitOperation(): this function insure that the DMA
*            controller has finished all data transfer.
*          - SD_GetStatus(): to check that the SD Card has finished the 
*            data transfer and it is ready for data.      
* @param  writebuff: pointer to the buffer that contain the data to be transferred.
* @param  WriteAddr: Address from where data are to be read.   
* @param  BlockSize: the SD card Data block size. The Block size should be 512.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WriteBlock(uint8_t *writebuff, uint32_t WriteAddr, uint16_t BlockSize)
{
	SD_Error errorstatus = SD_OK;
	uint8_t  power = 0, cardstate = 0;
	uint32_t timeout = 0, bytestransferred = 0;
	uint32_t cardstatus = 0, count = 0, restwords = 0;
	uint32_t *tempbuff;
	
	if (writebuff == NULL)
	{
		errorstatus = SD_INVALID_PARAMETER;
		return(errorstatus);
	}
	
	TransferError = SD_OK;
	TransferEnd = 0;
	TotalNumberOfBytes = 0;
	
	SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
	SDIO_DataInitStructure.SDIO_DataLength = 0;
	SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
	SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
	SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
	SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
	SDIO_DataConfig(&SDIO_DataInitStructure);
	SDIO_DMACmd(DISABLE);
	
	if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
	{
		errorstatus = SD_LOCK_UNLOCK_FAILED;
		return(errorstatus);
	}
	
	if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
	{
		BlockSize = 512;
		WriteAddr /= 512;
	}
	
	/*!< Set the block size, both on controller and card */
	if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
	{
		power = convert_from_bytes_to_power_of_two(BlockSize);
		
		SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
		
		if (errorstatus != SD_OK)
		{
			return(errorstatus);
		}
	}
	else
	{
		errorstatus = SD_INVALID_PARAMETER;
		return(errorstatus);
	}
	
	/*!< Wait till card is ready for data Added */
	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_SEND_STATUS);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	cardstatus = SDIO_GetResponse(SDIO_RESP1);
	
	timeout = SD_DATATIMEOUT;
	
	while (((cardstatus & 0x00000100) == 0) && (timeout > 0))
	{
		timeout--;
		SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp1Error(SD_CMD_SEND_STATUS);
		
		if (errorstatus != SD_OK)
		{
			return(errorstatus);
		}
		cardstatus = SDIO_GetResponse(SDIO_RESP1);
	}
	
	if (timeout == 0)
	{
		return(SD_ERROR);
	}
	
	/*!< Send CMD24 WRITE_SINGLE_BLOCK */
	SDIO_CmdInitStructure.SDIO_Argument = WriteAddr;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_SINGLE_BLOCK;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_WRITE_SINGLE_BLOCK);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	TotalNumberOfBytes = BlockSize;
	StopCondition = 0;
	tempbuff = (uint32_t *)writebuff;
	
	SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
	SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
	SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
	SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
	SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
	SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
	SDIO_DataConfig(&SDIO_DataInitStructure);
	
	/*!< In case of single data block transfer no need of stop command at all */
	if (DeviceMode == SD_POLLING_MODE)
	{
		while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
		{
			if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
			{
				if ((TotalNumberOfBytes - bytestransferred) < 32)
				{
					restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) : (( TotalNumberOfBytes -  bytestransferred) / 4 + 1);
					
					for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
					{
						SDIO_WriteData(*tempbuff);
					}
				}
				else
				{
					for (count = 0; count < 8; count++)
					{
						SDIO_WriteData(*(tempbuff + count));
					}
					tempbuff += 8;
					bytestransferred += 32;
				}
			}
		}
		if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
		{
			SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
			errorstatus = SD_DATA_TIMEOUT;
			return(errorstatus);
		}
		else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
		{
			SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
			errorstatus = SD_DATA_CRC_FAIL;
			return(errorstatus);
		}
		else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
		{
			SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
			errorstatus = SD_TX_UNDERRUN;
			return(errorstatus);
		}
		else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
		{
			SDIO_ClearFlag(SDIO_FLAG_STBITERR);
			errorstatus = SD_START_BIT_ERR;
			return(errorstatus);
		}
	}
	else if (DeviceMode == SD_INTERRUPT_MODE)
	{
// 		SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_FLAG_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
// 		while ((TransferEnd == 0) && (TransferError == SD_OK))
// 		{}
// 		if (TransferError != SD_OK)
// 		{
// 			return(TransferError);
// 		}
	}
	else if (DeviceMode == SD_DMA_MODE)
	{
// 		SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
// 		SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, BlockSize);
// 		SDIO_DMACmd(ENABLE);
// 		while ((SD_DMAEndOfTransferStatus() == RESET) && (TransferEnd == 0) && (TransferError == SD_OK))
// 		{}
// 		if (TransferError != SD_OK)
// 		{
// 			return(TransferError);
// 		}
	}
	
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
	/*!< Wait till the card is in programming state */
	errorstatus = IsCardProgramming(&cardstate);
	
	while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
	{
		errorstatus = IsCardProgramming(&cardstate);
	}
	
	return(errorstatus);
	
// 	SD_Error errorstatus = SD_OK;
// 	uint32_t bytestransferred = 0, count = 0, restwords = 0;
// 	uint32_t *tempbuff = (uint32_t *)writebuff;
// 	
// 	
// 	TransferError = SD_OK;
// 	TransferEnd = 0;
// 	StopCondition = 0;
// 	
// 	SDIO->DCTRL = 0x0;
// 	
// 	
// 	if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
// 	{
// 		BlockSize = 512;
// 		WriteAddr /= 512;
// 	}
// 	
// 	/* Set Block Size for Card */ 
// 	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
// 	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
// 	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
// 	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
// 	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
// 	SDIO_SendCommand(&SDIO_CmdInitStructure);
// 	
// 	errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
// 	
// 	if (SD_OK != errorstatus)
// 	{
// 		return(errorstatus);
// 	}
//     
// 	/*!< Send CMD24 WRITE_SINGLE_BLOCK */
// 	SDIO_CmdInitStructure.SDIO_Argument = WriteAddr;
// 	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_SINGLE_BLOCK;
// 	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
// 	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
// 	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
// 	SDIO_SendCommand(&SDIO_CmdInitStructure);
// 	
// 	errorstatus = CmdResp1Error(SD_CMD_WRITE_SINGLE_BLOCK);
// 	
// 	if (errorstatus != SD_OK)
// 	{
// 		return(errorstatus);
// 	}
// 	
// 	SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
// 	SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
// 	SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
// 	SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
// 	SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
// 	SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
// 	SDIO_DataConfig(&SDIO_DataInitStructure);
// 	
// 	/*!< In case of single data block transfer no need of stop command at all */
// 	if (DeviceMode == SD_POLLING_MODE)
// 	{
// 		while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
// 		{
// 			if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
// 			{
// 				if ((512 - bytestransferred) < 32)
// 				{
// 					restwords = ((512 - bytestransferred) % 4 == 0) ? ((512 - bytestransferred) / 4) : (( 512 -  bytestransferred) / 4 + 1);
// 					for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
// 					{
// 						SDIO_WriteData(*tempbuff);
// 					}
// 				}
// 				else
// 				{
// 					for (count = 0; count < 8; count++)
// 					{
// 						SDIO_WriteData(*(tempbuff + count));
// 					}
// 					tempbuff += 8;
// 					bytestransferred += 32;
// 				}
// 			}
// 		}
// 		if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
// 		{
// 			SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
// 			errorstatus = SD_DATA_TIMEOUT;
// 			return(errorstatus);
// 		}
// 		else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
// 		{
// 			SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
// 			errorstatus = SD_DATA_CRC_FAIL;
// 			return(errorstatus);
// 		}
// 		else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
// 		{
// 			SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
// 			errorstatus = SD_TX_UNDERRUN;
// 			return(errorstatus);
// 		}
// 		else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
// 		{
// 			SDIO_ClearFlag(SDIO_FLAG_STBITERR);
// 			errorstatus = SD_START_BIT_ERR;
// 			return(errorstatus);
// 		}
// 	}else if (DeviceMode == SD_INTERRUPT_MODE)
// 	{
// 		
// 	}
// 	else if (DeviceMode == SD_DMA_MODE)
// 	{
// 	}
// 	
// 	
// 	return(errorstatus);
}

/**
* @brief  Allows to write blocks starting from a specified address in a card.
*         The Data transfer can be managed by DMA mode only. 
* @note   This operation should be followed by two functions to check if the 
*         DMA Controller and SD Card status.
*          - SD_ReadWaitOperation(): this function insure that the DMA
*            controller has finished all data transfer.
*          - SD_GetStatus(): to check that the SD Card has finished the 
*            data transfer and it is ready for data.     
* @param  WriteAddr: Address from where data are to be read.
* @param  writebuff: pointer to the buffer that contain the data to be transferred.
* @param  BlockSize: the SD card Data block size. The Block size should be 512.
* @param  NumberOfBlocks: number of blocks to be written.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WriteMultiBlocks(uint8_t *writebuff, uint32_t WriteAddr, uint16_t BlockSize, uint32_t NumberOfBlocks)
{
	SD_Error errorstatus = SD_OK;
	uint8_t  power = 0, cardstate = 0;
	uint32_t bytestransferred = 0;
	uint32_t count = 0, restwords = 0;
	uint32_t *tempbuff ;
	
	if (writebuff == NULL)
	{
		errorstatus = SD_INVALID_PARAMETER;
		return(errorstatus);
	}
	
	TransferError = SD_OK;
	TransferEnd = 0;
	TotalNumberOfBytes = 0;
	
	SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
	SDIO_DataInitStructure.SDIO_DataLength = 0;
	SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
	SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
	SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
	SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
	SDIO_DataConfig(&SDIO_DataInitStructure);
	SDIO_DMACmd(DISABLE);
	
	if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
	{
		errorstatus = SD_LOCK_UNLOCK_FAILED;
		return(errorstatus);
	}
	
	if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
	{
		BlockSize = 512;
		WriteAddr /= 512;
	}
	
	/* Set the block size, both on controller and card */
	if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
	{
		power = convert_from_bytes_to_power_of_two(BlockSize);
		
		SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
		
		if (errorstatus != SD_OK)
		{
			return(errorstatus);
		}
	}
	else
	{
		errorstatus = SD_INVALID_PARAMETER;
		return(errorstatus);
	}
	
	/* Wait till card is ready for data Added */
	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_SEND_STATUS);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	if (NumberOfBlocks > 1)
	{
		/* Common to all modes */
		if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
		{
			errorstatus = SD_INVALID_PARAMETER;
			return(errorstatus);
		}
		
		if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
		{
			/* To improve performance */
			SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
			SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
			SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
			SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
			SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
			SDIO_SendCommand(&SDIO_CmdInitStructure);
			
			
			errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
			
			if (errorstatus != SD_OK)
			{
				return(errorstatus);
			}
			/* To improve performance */
			SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;
			SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCK_COUNT;
			SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
			SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
			SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
			SDIO_SendCommand(&SDIO_CmdInitStructure);
			
			errorstatus = CmdResp1Error(SD_CMD_SET_BLOCK_COUNT);
			
			if (errorstatus != SD_OK)
			{
				return(errorstatus);
			}
		}
		
		/* Send CMD25 WRITE_MULT_BLOCK with argument data address */
		SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)WriteAddr;
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_MULT_BLOCK;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp1Error(SD_CMD_WRITE_MULT_BLOCK);
		
		if (SD_OK != errorstatus)
		{
			return(errorstatus);
		}
		
		TotalNumberOfBytes = NumberOfBlocks * BlockSize;
		StopCondition = 1;
		tempbuff = (uint32_t *)writebuff;
		
		SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
		SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
		SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
		SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
		SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
		SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
		SDIO_DataConfig(&SDIO_DataInitStructure);
		
		if (DeviceMode == SD_POLLING_MODE)
		{
			while (!(SDIO->STA & (SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
			{
				if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
				{
					if (!((TotalNumberOfBytes - bytestransferred) < SD_HALFFIFOBYTES))
					{
						for (count = 0; count < SD_HALFFIFO; count++)
						{
							SDIO_WriteData(*(tempbuff + count));
						}
						tempbuff += SD_HALFFIFO;
						bytestransferred += SD_HALFFIFOBYTES;
					}
					else
					{
						restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) :
					((TotalNumberOfBytes - bytestransferred) / 4 + 1);
					
					for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
					{
						SDIO_WriteData(*tempbuff);
					}
					}
				}
			}
			
			if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
			{
				SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
				errorstatus = SD_DATA_TIMEOUT;
				return(errorstatus);
			}
			else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
			{
				SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
				errorstatus = SD_DATA_CRC_FAIL;
				return(errorstatus);
			}
			else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
			{
				SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
				errorstatus = SD_TX_UNDERRUN;
				return(errorstatus);
			}
			else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
			{
				SDIO_ClearFlag(SDIO_FLAG_STBITERR);
				errorstatus = SD_START_BIT_ERR;
				return(errorstatus);
			}
			
			if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
			{
				if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
				{
					/* Send CMD12 STOP_TRANSMISSION */
					SDIO_CmdInitStructure.SDIO_Argument = 0x0;
					SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION;
					SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
					SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
					SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
					SDIO_SendCommand(&SDIO_CmdInitStructure);
					
					
					errorstatus = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);
					
					if (errorstatus != SD_OK)
					{
						return(errorstatus);
					}
				}
			}
		}
		else if (DeviceMode == SD_INTERRUPT_MODE)
		{
			// 			SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
			// 			while ((TransferEnd == 0) && (TransferError == SD_OK))
			// 			{}
			// 			if (TransferError != SD_OK)
			// 			{
			// 				return(TransferError);
			// 			}
		}
		else if (DeviceMode == SD_DMA_MODE)
		{
			// 			SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
			// 			SDIO_DMACmd(ENABLE);
			// 			DMA_TxConfiguration(writebuff, (NumberOfBlocks * BlockSize));
			// 			while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
			// 			{}
			// 			while ((TransferEnd == 0) && (TransferError == SD_OK))
			// 			{}
			// 			if (TransferError != SD_OK)
			// 			{
			// 				return(TransferError);
			// 			}
		}
  }
  
  /* Clear all the static flags */
  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
  
  /* Wait till the card is in programming state */
  errorstatus = IsCardProgramming(&cardstate);
  
  while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
  {
	  errorstatus = IsCardProgramming(&cardstate);
  }
  
  return(errorstatus);
  
  
  // 	SD_Error errorstatus = SD_OK;
  // 	
  // 	TransferError = SD_OK;
  // 	TransferEnd = 0;
  // 	StopCondition = 1;
  // 	
  // 	SDIO->DCTRL = 0x0;
  // 	
  // 	if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
  // 	{
  // 		BlockSize = 512;
  // 		WriteAddr /= 512;
  // 	}
  // 	
  // 	/* Set Block Size for Card */ 
  // 	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
  // 	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
  // 	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  // 	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  // 	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  // 	SDIO_SendCommand(&SDIO_CmdInitStructure);
  // 	
  // 	errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
  // 	
  // 	if (SD_OK != errorstatus)
  // 	{
  // 		return(errorstatus);
  // 	}
  // 	
  // 	/*!< To improve performance */
  // 	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
  // 	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
  // 	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  // 	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  // 	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  // 	SDIO_SendCommand(&SDIO_CmdInitStructure);
  // 	
  // 	
  // 	errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
  // 	
  // 	if (errorstatus != SD_OK)
  // 	{
  // 		return(errorstatus);
  // 	}
  // 	/*!< To improve performance */
  // 	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;
  // 	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCK_COUNT;
  // 	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  // 	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  // 	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  // 	SDIO_SendCommand(&SDIO_CmdInitStructure);
  // 	
  // 	errorstatus = CmdResp1Error(SD_CMD_SET_BLOCK_COUNT);
  // 	
  // 	if (errorstatus != SD_OK)
  // 	{
  // 		return(errorstatus);
  // 	}
  // 	
  // 	
  // 	/*!< Send CMD25 WRITE_MULT_BLOCK with argument data address */
  // 	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)WriteAddr;
  // 	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_WRITE_MULT_BLOCK;
  // 	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
  // 	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
  // 	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
  // 	SDIO_SendCommand(&SDIO_CmdInitStructure);
  // 	
  // 	errorstatus = CmdResp1Error(SD_CMD_WRITE_MULT_BLOCK);
  // 	
  // 	if (SD_OK != errorstatus)
  // 	{
  // 		return(errorstatus);
  // 	}
  // 	
  // 	SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
  // 	SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
  // 	SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) 9 << 4;
  // 	SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
  // 	SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
  // 	SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
  // 	SDIO_DataConfig(&SDIO_DataInitStructure);
  // 	
  // 	SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
  // 	SDIO_DMACmd(ENABLE);
  // 	SD_LowLevel_DMA_TxConfig((uint32_t *)writebuff, (NumberOfBlocks * BlockSize));
  // 	SDIO_DMACmd(ENABLE);
  // 	return(errorstatus);
}

/**
* @brief  This function waits until the SDIO DMA data transfer is finished. 
*         This function should be called after SDIO_WriteBlock() and
*         SDIO_WriteMultiBlocks() function to insure that all data sent by the 
*         card are already transferred by the DMA controller.        
* @param  None.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_WaitWriteOperation(void)
{
	SD_Error errorstatus = SD_OK;
	uint32_t timeout;
	
	timeout = SD_DATATIMEOUT;
	
	while ((DMAEndOfTransfer == 0x00) && (TransferEnd == 0) && (TransferError == SD_OK) && (timeout > 0))
	{
		timeout--;
	}
	
	DMAEndOfTransfer = 0x00;
	
	timeout = SD_DATATIMEOUT;
	
	while(((SDIO->STA & SDIO_FLAG_TXACT)) && (timeout > 0))
	{
		timeout--;  
	}
	
	if (StopCondition == 1)
	{
		errorstatus = SD_StopTransfer();
	}
	
	if ((timeout == 0) && (errorstatus == SD_OK))
	{
		errorstatus = SD_DATA_TIMEOUT;
	}
	
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
	if (TransferError != SD_OK)
	{
		return(TransferError);
	}
	else
	{
		return(errorstatus);
	}
}

/**
* @brief  Gets the cuurent data transfer state.
* @param  None
* @retval SDTransferState: Data Transfer state.
*   This value can be: 
*        - SD_TRANSFER_OK: No data transfer is acting
*        - SD_TRANSFER_BUSY: Data transfer is acting
*/
SDTransferState SD_GetTransferState(void)
{
	if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))
	{
		return(SD_TRANSFER_BUSY);
	}
	else
	{
		return(SD_TRANSFER_OK);
	}
}

/**
* @brief  Aborts an ongoing data transfer.
* @param  None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_StopTransfer(void)
{
	SD_Error errorstatus = SD_OK;
	
	/*!< Send CMD12 STOP_TRANSMISSION  */
	SDIO_CmdInitStructure.SDIO_Argument = 0x0;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_STOP_TRANSMISSION;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_STOP_TRANSMISSION);
	
	return(errorstatus);
}

/**
* @brief  Allows to erase memory area specified for the given card.
* @param  startaddr: the start address.
* @param  endaddr: the end address.
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr)
{
	SD_Error errorstatus = SD_OK;
	uint32_t delay = 0;
	__IO uint32_t maxdelay = 0;
	uint8_t cardstate = 0;
	
	/*!< Check if the card coomnd class supports erase command */
	if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
	{
		errorstatus = SD_REQUEST_NOT_APPLICABLE;
		return(errorstatus);
	}
	
	maxdelay = 120000 / ((SDIO->CLKCR & 0xFF) + 2);
	
	if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
	{
		errorstatus = SD_LOCK_UNLOCK_FAILED;
		return(errorstatus);
	}
	
	if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
	{
		startaddr /= 512;
		endaddr /= 512;
	}
	
	/*!< According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
	if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
	{
		/*!< Send CMD32 SD_ERASE_GRP_START with argument as addr  */
		SDIO_CmdInitStructure.SDIO_Argument = startaddr;
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_START;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_START);
		if (errorstatus != SD_OK)
		{
			return(errorstatus);
		}
		
		/*!< Send CMD33 SD_ERASE_GRP_END with argument as addr  */
		SDIO_CmdInitStructure.SDIO_Argument = endaddr;
		SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_ERASE_GRP_END;
		SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
		SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
		SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
		SDIO_SendCommand(&SDIO_CmdInitStructure);
		
		errorstatus = CmdResp1Error(SD_CMD_SD_ERASE_GRP_END);
		if (errorstatus != SD_OK)
		{
			return(errorstatus);
		}
	}
	
	/*!< Send CMD38 ERASE */
	SDIO_CmdInitStructure.SDIO_Argument = 0;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_ERASE;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_ERASE);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	for (delay = 0; delay < maxdelay; delay++)
	{}
	
	/*!< Wait till the card is in programming state */
	errorstatus = IsCardProgramming(&cardstate);
	delay = SD_DATATIMEOUT;
	while ((delay > 0) && (errorstatus == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate)))
	{
		errorstatus = IsCardProgramming(&cardstate);
		delay--;
	}
	
	return(errorstatus);
}

/**
* @brief  Returns the current card's status.
* @param  pcardstatus: pointer to the buffer that will contain the SD card 
*         status (Card Status register).
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_SendStatus(uint32_t *pcardstatus)
{
	SD_Error errorstatus = SD_OK;
	
	if (pcardstatus == NULL)
	{
		errorstatus = SD_INVALID_PARAMETER;
		return(errorstatus);
	}
	
	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_SEND_STATUS);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	*pcardstatus = SDIO_GetResponse(SDIO_RESP1);
	
	return(errorstatus);
}

/**
* @brief  Returns the current SD card's status.
* @param  psdstatus: pointer to the buffer that will contain the SD card status 
*         (SD Status register).
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_SendSDStatus(uint32_t *psdstatus)
{
	SD_Error errorstatus = SD_OK;
	uint32_t count = 0;
	
	if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
	{
		errorstatus = SD_LOCK_UNLOCK_FAILED;
		return(errorstatus);
	}
	
	/*!< Set block size for card if it is not equal to current block size for card. */
	SDIO_CmdInitStructure.SDIO_Argument = 64;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	/*!< CMD55 */
	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
	SDIO_DataInitStructure.SDIO_DataLength = 64;
	SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;
	SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
	SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
	SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
	SDIO_DataConfig(&SDIO_DataInitStructure);
	
	/*!< Send ACMD13 SD_APP_STAUS  with argument as card's RCA.*/
	SDIO_CmdInitStructure.SDIO_Argument = 0;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_STAUS;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	errorstatus = CmdResp1Error(SD_CMD_SD_APP_STAUS);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
	{
		if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
		{
			for (count = 0; count < 8; count++)
			{
				*(psdstatus + count) = SDIO_ReadData();
			}
			psdstatus += 8;
		}
	}
	
	if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
		errorstatus = SD_DATA_TIMEOUT;
		return(errorstatus);
	}
	else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
		errorstatus = SD_DATA_CRC_FAIL;
		return(errorstatus);
	}
	else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
		errorstatus = SD_RX_OVERRUN;
		return(errorstatus);
	}
	else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_STBITERR);
		errorstatus = SD_START_BIT_ERR;
		return(errorstatus);
	}
	
	count = SD_DATATIMEOUT;
	while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET) && (count > 0))
	{
		*psdstatus = SDIO_ReadData();
		psdstatus++;
		count--;
	}
	/*!< Clear all the static status flags*/
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
	return(errorstatus);
}

/**
* @brief  Allows to process all the interrupts that are high.
* @param  None
* @retval SD_Error: SD Card Error code.
*/
SD_Error SD_ProcessIRQSrc(void)
{ 
	if (SDIO_GetITStatus(SDIO_IT_DATAEND) != RESET)
	{
		TransferError = SD_OK;
		SDIO_ClearITPendingBit(SDIO_IT_DATAEND);
		TransferEnd = 1;
	}  
	else if (SDIO_GetITStatus(SDIO_IT_DCRCFAIL) != RESET)
	{
		SDIO_ClearITPendingBit(SDIO_IT_DCRCFAIL);
		TransferError = SD_DATA_CRC_FAIL;
	}
	else if (SDIO_GetITStatus(SDIO_IT_DTIMEOUT) != RESET)
	{
		SDIO_ClearITPendingBit(SDIO_IT_DTIMEOUT);
		TransferError = SD_DATA_TIMEOUT;
	}
	else if (SDIO_GetITStatus(SDIO_IT_RXOVERR) != RESET)
	{
		SDIO_ClearITPendingBit(SDIO_IT_RXOVERR);
		TransferError = SD_RX_OVERRUN;
	}
	else if (SDIO_GetITStatus(SDIO_IT_TXUNDERR) != RESET)
	{
		SDIO_ClearITPendingBit(SDIO_IT_TXUNDERR);
		TransferError = SD_TX_UNDERRUN;
	}
	else if (SDIO_GetITStatus(SDIO_IT_STBITERR) != RESET)
	{
		SDIO_ClearITPendingBit(SDIO_IT_STBITERR);
		TransferError = SD_START_BIT_ERR;
	}
	
	SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
		SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
		SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
	return(TransferError);
}

/**
* @brief  This function waits until the SDIO DMA data transfer is finished. 
* @param  None.
* @retval None.
*/
void SD_ProcessDMAIRQ(void)
{
	if(DMA2->LISR & SD_SDIO_DMA_FLAG_TCIF)
	{
		DMAEndOfTransfer = 0x01;
		DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_TCIF|SD_SDIO_DMA_FLAG_FEIF);
	}
}

/**
* @brief  Checks for error conditions for CMD0.
* @param  None
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdError(void)
{
	SD_Error errorstatus = SD_OK;
	uint32_t timeout;
	
	timeout = SDIO_CMD0TIMEOUT; /*!< 10000 */
	
	while ((timeout > 0) && (SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) == RESET))
	{
		timeout--;
	}
	
	if (timeout == 0)
	{
		errorstatus = SD_CMD_RSP_TIMEOUT;
		return(errorstatus);
	}
	
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
	return(errorstatus);
}

/**
* @brief  Checks for error conditions for R7 response.
* @param  None
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdResp7Error(void)
{
	SD_Error errorstatus = SD_OK;
	uint32_t status;
	uint32_t timeout = SDIO_CMD0TIMEOUT;
	
	status = SDIO->STA;
	
	while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)) && (timeout > 0))
	{
		timeout--;
		status = SDIO->STA;
	}
	
	if ((timeout == 0) || (status & SDIO_FLAG_CTIMEOUT))
	{
		/*!< Card is not V2.0 complient or card does not support the set voltage range */
		errorstatus = SD_CMD_RSP_TIMEOUT;
		SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
		return(errorstatus);
	}
	
	if (status & SDIO_FLAG_CMDREND)
	{
		/*!< Card is SD V2.0 compliant */
		errorstatus = SD_OK;
		SDIO_ClearFlag(SDIO_FLAG_CMDREND);
		return(errorstatus);
	}
	return(errorstatus);
}

/**
* @brief  Checks for error conditions for R1 response.
* @param  cmd: The sent command index.
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdResp1Error(uint8_t cmd)
{
	SD_Error errorstatus = SD_OK;
	uint32_t status;
	uint32_t response_r1;
	
	status = SDIO->STA;
	
	while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
	{
		status = SDIO->STA;
	}
	
	if (status & SDIO_FLAG_CTIMEOUT)
	{
		errorstatus = SD_CMD_RSP_TIMEOUT;
		SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
		return(errorstatus);
	}
	else if (status & SDIO_FLAG_CCRCFAIL)
	{
		errorstatus = SD_CMD_CRC_FAIL;
		SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
		return(errorstatus);
	}
	
	/*!< Check response received is of desired command */
	if (SDIO_GetCommandResponse() != cmd)
	{
		errorstatus = SD_ILLEGAL_CMD;
		return(errorstatus);
	}
	
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
	/*!< We have received response, retrieve it for analysis  */
	response_r1 = SDIO_GetResponse(SDIO_RESP1);
	
	if ((response_r1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
	{
		return(errorstatus);
	}
	
	if (response_r1 & SD_OCR_ADDR_OUT_OF_RANGE)
	{
		return(SD_ADDR_OUT_OF_RANGE);
	}
	
	if (response_r1 & SD_OCR_ADDR_MISALIGNED)
	{
		return(SD_ADDR_MISALIGNED);
	}
	
	if (response_r1 & SD_OCR_BLOCK_LEN_ERR)
	{
		return(SD_BLOCK_LEN_ERR);
	}
	
	if (response_r1 & SD_OCR_ERASE_SEQ_ERR)
	{
		return(SD_ERASE_SEQ_ERR);
	}
	
	if (response_r1 & SD_OCR_BAD_ERASE_PARAM)
	{
		return(SD_BAD_ERASE_PARAM);
	}
	
	if (response_r1 & SD_OCR_WRITE_PROT_VIOLATION)
	{
		return(SD_WRITE_PROT_VIOLATION);
	}
	
	if (response_r1 & SD_OCR_LOCK_UNLOCK_FAILED)
	{
		return(SD_LOCK_UNLOCK_FAILED);
	}
	
	if (response_r1 & SD_OCR_COM_CRC_FAILED)
	{
		return(SD_COM_CRC_FAILED);
	}
	
	if (response_r1 & SD_OCR_ILLEGAL_CMD)
	{
		return(SD_ILLEGAL_CMD);
	}
	
	if (response_r1 & SD_OCR_CARD_ECC_FAILED)
	{
		return(SD_CARD_ECC_FAILED);
	}
	
	if (response_r1 & SD_OCR_CC_ERROR)
	{
		return(SD_CC_ERROR);
	}
	
	if (response_r1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
	{
		return(SD_GENERAL_UNKNOWN_ERROR);
	}
	
	if (response_r1 & SD_OCR_STREAM_READ_UNDERRUN)
	{
		return(SD_STREAM_READ_UNDERRUN);
	}
	
	if (response_r1 & SD_OCR_STREAM_WRITE_OVERRUN)
	{
		return(SD_STREAM_WRITE_OVERRUN);
	}
	
	if (response_r1 & SD_OCR_CID_CSD_OVERWRIETE)
	{
		return(SD_CID_CSD_OVERWRITE);
	}
	
	if (response_r1 & SD_OCR_WP_ERASE_SKIP)
	{
		return(SD_WP_ERASE_SKIP);
	}
	
	if (response_r1 & SD_OCR_CARD_ECC_DISABLED)
	{
		return(SD_CARD_ECC_DISABLED);
	}
	
	if (response_r1 & SD_OCR_ERASE_RESET)
	{
		return(SD_ERASE_RESET);
	}
	
	if (response_r1 & SD_OCR_AKE_SEQ_ERROR)
	{
		return(SD_AKE_SEQ_ERROR);
	}
	return(errorstatus);
}

/**
* @brief  Checks for error conditions for R3 (OCR) response.
* @param  None
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdResp3Error(void)
{
	SD_Error errorstatus = SD_OK;
	uint32_t status;
	
	status = SDIO->STA;
	
	while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
	{
		status = SDIO->STA;
	}
	
	if (status & SDIO_FLAG_CTIMEOUT)
	{
		errorstatus = SD_CMD_RSP_TIMEOUT;
		SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
		return(errorstatus);
	}
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	return(errorstatus);
}

/**
* @brief  Checks for error conditions for R2 (CID or CSD) response.
* @param  None
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdResp2Error(void)
{
	SD_Error errorstatus = SD_OK;
	uint32_t status;
	
	status = SDIO->STA;
	
	while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
	{
		status = SDIO->STA;
	}
	
	if (status & SDIO_FLAG_CTIMEOUT)
	{
		errorstatus = SD_CMD_RSP_TIMEOUT;
		SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
		return(errorstatus);
	}
	else if (status & SDIO_FLAG_CCRCFAIL)
	{
		errorstatus = SD_CMD_CRC_FAIL;
		SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
		return(errorstatus);
	}
	
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
	return(errorstatus);
}

/**
* @brief  Checks for error conditions for R6 (RCA) response.
* @param  cmd: The sent command index.
* @param  prca: pointer to the variable that will contain the SD card relative 
*         address RCA. 
* @retval SD_Error: SD Card Error code.
*/
static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca)
{
	SD_Error errorstatus = SD_OK;
	uint32_t status;
	uint32_t response_r1;
	
	status = SDIO->STA;
	
	while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
	{
		status = SDIO->STA;
	}
	
	if (status & SDIO_FLAG_CTIMEOUT)
	{
		errorstatus = SD_CMD_RSP_TIMEOUT;
		SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
		return(errorstatus);
	}
	else if (status & SDIO_FLAG_CCRCFAIL)
	{
		errorstatus = SD_CMD_CRC_FAIL;
		SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
		return(errorstatus);
	}
	
	/*!< Check response received is of desired command */
	if (SDIO_GetCommandResponse() != cmd)
	{
		errorstatus = SD_ILLEGAL_CMD;
		return(errorstatus);
	}
	
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
	/*!< We have received response, retrieve it.  */
	response_r1 = SDIO_GetResponse(SDIO_RESP1);
	
	if (SD_ALLZERO == (response_r1 & (SD_R6_GENERAL_UNKNOWN_ERROR | SD_R6_ILLEGAL_CMD | SD_R6_COM_CRC_FAILED)))
	{
		*prca = (uint16_t) (response_r1 >> 16);
		return(errorstatus);
	}
	
	if (response_r1 & SD_R6_GENERAL_UNKNOWN_ERROR)
	{
		return(SD_GENERAL_UNKNOWN_ERROR);
	}
	
	if (response_r1 & SD_R6_ILLEGAL_CMD)
	{
		return(SD_ILLEGAL_CMD);
	}
	
	if (response_r1 & SD_R6_COM_CRC_FAILED)
	{
		return(SD_COM_CRC_FAILED);
	}
	
	return(errorstatus);
}

/**
* @brief  Enables or disables the SDIO wide bus mode.
* @param  NewState: new state of the SDIO wide bus mode.
*   This parameter can be: ENABLE or DISABLE.
* @retval SD_Error: SD Card Error code.
*/
static SD_Error SDEnWideBus(FunctionalState NewState)
{
	SD_Error errorstatus = SD_OK;
	
	uint32_t scr[2] = {0, 0};
	
	if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
	{
		errorstatus = SD_LOCK_UNLOCK_FAILED;
		return(errorstatus);
	}
	
	/*!< Get SCR Register */
	errorstatus = FindSCR(RCA, scr);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	/*!< If wide bus operation to be enabled */
	if (NewState == ENABLE)
	{
		/*!< If requested card supports wide bus operation */
		if ((scr[1] & SD_WIDE_BUS_SUPPORT) != SD_ALLZERO)
		{
			/*!< Send CMD55 APP_CMD with argument as card's RCA.*/
			SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
			SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
			SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
			SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
			SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
			SDIO_SendCommand(&SDIO_CmdInitStructure);
			
			errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
			
			if (errorstatus != SD_OK)
			{
				return(errorstatus);
			}
			
			/*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
			SDIO_CmdInitStructure.SDIO_Argument = 0x2;
			SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
			SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
			SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
			SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
			SDIO_SendCommand(&SDIO_CmdInitStructure);
			
			errorstatus = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);
			
			if (errorstatus != SD_OK)
			{
				return(errorstatus);
			}
			return(errorstatus);
		}
		else
		{
			errorstatus = SD_REQUEST_NOT_APPLICABLE;
			return(errorstatus);
		}
	}   /*!< If wide bus operation to be disabled */
	else
	{
		/*!< If requested card supports 1 bit mode operation */
		if ((scr[1] & SD_SINGLE_BUS_SUPPORT) != SD_ALLZERO)
		{
			/*!< Send CMD55 APP_CMD with argument as card's RCA.*/
			SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
			SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
			SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
			SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
			SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
			SDIO_SendCommand(&SDIO_CmdInitStructure);
			
			
			errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
			
			if (errorstatus != SD_OK)
			{
				return(errorstatus);
			}
			
			/*!< Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
			SDIO_CmdInitStructure.SDIO_Argument = 0x00;
			SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_SD_SET_BUSWIDTH;
			SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
			SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
			SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
			SDIO_SendCommand(&SDIO_CmdInitStructure);
			
			errorstatus = CmdResp1Error(SD_CMD_APP_SD_SET_BUSWIDTH);
			
			if (errorstatus != SD_OK)
			{
				return(errorstatus);
			}
			
			return(errorstatus);
		}
		else
		{
			errorstatus = SD_REQUEST_NOT_APPLICABLE;
			return(errorstatus);
		}
	}
}

/**
* @brief  Checks if the SD card is in programming state.
* @param  pstatus: pointer to the variable that will contain the SD card state.
* @retval SD_Error: SD Card Error code.
*/
static SD_Error IsCardProgramming(uint8_t *pstatus)
{
	SD_Error errorstatus = SD_OK;
	__IO uint32_t respR1 = 0, status = 0;
	
	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SEND_STATUS;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	status = SDIO->STA;
	while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
	{
		status = SDIO->STA;
	}
	
	if (status & SDIO_FLAG_CTIMEOUT)
	{
		errorstatus = SD_CMD_RSP_TIMEOUT;
		SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
		return(errorstatus);
	}
	else if (status & SDIO_FLAG_CCRCFAIL)
	{
		errorstatus = SD_CMD_CRC_FAIL;
		SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
		return(errorstatus);
	}
	
	status = (uint32_t)SDIO_GetCommandResponse();
	
	/*!< Check response received is of desired command */
	if (status != SD_CMD_SEND_STATUS)
	{
		errorstatus = SD_ILLEGAL_CMD;
		return(errorstatus);
	}
	
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
	
	/*!< We have received response, retrieve it for analysis  */
	respR1 = SDIO_GetResponse(SDIO_RESP1);
	
	/*!< Find out card status */
	*pstatus = (uint8_t) ((respR1 >> 9) & 0x0000000F);
	
	if ((respR1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
	{
		return(errorstatus);
	}
	
	if (respR1 & SD_OCR_ADDR_OUT_OF_RANGE)
	{
		return(SD_ADDR_OUT_OF_RANGE);
	}
	
	if (respR1 & SD_OCR_ADDR_MISALIGNED)
	{
		return(SD_ADDR_MISALIGNED);
	}
	
	if (respR1 & SD_OCR_BLOCK_LEN_ERR)
	{
		return(SD_BLOCK_LEN_ERR);
	}
	
	if (respR1 & SD_OCR_ERASE_SEQ_ERR)
	{
		return(SD_ERASE_SEQ_ERR);
	}
	
	if (respR1 & SD_OCR_BAD_ERASE_PARAM)
	{
		return(SD_BAD_ERASE_PARAM);
	}
	
	if (respR1 & SD_OCR_WRITE_PROT_VIOLATION)
	{
		return(SD_WRITE_PROT_VIOLATION);
	}
	
	if (respR1 & SD_OCR_LOCK_UNLOCK_FAILED)
	{
		return(SD_LOCK_UNLOCK_FAILED);
	}
	
	if (respR1 & SD_OCR_COM_CRC_FAILED)
	{
		return(SD_COM_CRC_FAILED);
	}
	
	if (respR1 & SD_OCR_ILLEGAL_CMD)
	{
		return(SD_ILLEGAL_CMD);
	}
	
	if (respR1 & SD_OCR_CARD_ECC_FAILED)
	{
		return(SD_CARD_ECC_FAILED);
	}
	
	if (respR1 & SD_OCR_CC_ERROR)
	{
		return(SD_CC_ERROR);
	}
	
	if (respR1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
	{
		return(SD_GENERAL_UNKNOWN_ERROR);
	}
	
	if (respR1 & SD_OCR_STREAM_READ_UNDERRUN)
	{
		return(SD_STREAM_READ_UNDERRUN);
	}
	
	if (respR1 & SD_OCR_STREAM_WRITE_OVERRUN)
	{
		return(SD_STREAM_WRITE_OVERRUN);
	}
	
	if (respR1 & SD_OCR_CID_CSD_OVERWRIETE)
	{
		return(SD_CID_CSD_OVERWRITE);
	}
	
	if (respR1 & SD_OCR_WP_ERASE_SKIP)
	{
		return(SD_WP_ERASE_SKIP);
	}
	
	if (respR1 & SD_OCR_CARD_ECC_DISABLED)
	{
		return(SD_CARD_ECC_DISABLED);
	}
	
	if (respR1 & SD_OCR_ERASE_RESET)
	{
		return(SD_ERASE_RESET);
	}
	
	if (respR1 & SD_OCR_AKE_SEQ_ERROR)
	{
		return(SD_AKE_SEQ_ERROR);
	}
	
	return(errorstatus);
}

/**
* @brief  Find the SD card SCR register value.
* @param  rca: selected card address.
* @param  pscr: pointer to the buffer that will contain the SCR value.
* @retval SD_Error: SD Card Error code.
*/
static SD_Error FindSCR(uint16_t rca, uint32_t *pscr)
{
	uint32_t index = 0;
	SD_Error errorstatus = SD_OK;
	uint32_t tempscr[2] = {0, 0};
	
	/*!< Set Block Size To 8 Bytes */
	/*!< Send CMD55 APP_CMD with argument as card's RCA */
	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SET_BLOCKLEN;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_SET_BLOCKLEN);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	/*!< Send CMD55 APP_CMD with argument as card's RCA */
	SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_APP_CMD;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_APP_CMD);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
	SDIO_DataInitStructure.SDIO_DataLength = 8;
	SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b;
	SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
	SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
	SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
	SDIO_DataConfig(&SDIO_DataInitStructure);
	
	
	/*!< Send ACMD51 SD_APP_SEND_SCR with argument as 0 */
	SDIO_CmdInitStructure.SDIO_Argument = 0x0;
	SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CMD_SD_APP_SEND_SCR;
	SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
	SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
	SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
	SDIO_SendCommand(&SDIO_CmdInitStructure);
	
	errorstatus = CmdResp1Error(SD_CMD_SD_APP_SEND_SCR);
	
	if (errorstatus != SD_OK)
	{
		return(errorstatus);
	}
	
	while (!(SDIO->STA & (SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
	{
		if (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
		{
			*(tempscr + index) = SDIO_ReadData();
			index++;
		}
	}
	
	if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
		errorstatus = SD_DATA_TIMEOUT;
		return(errorstatus);
	}
	else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
		errorstatus = SD_DATA_CRC_FAIL;
		return(errorstatus);
	}
	else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
		errorstatus = SD_RX_OVERRUN;
		return(errorstatus);
	}
	else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
	{
		SDIO_ClearFlag(SDIO_FLAG_STBITERR);
		errorstatus = SD_START_BIT_ERR;
		return(errorstatus);
	}
	
	/*!< Clear all the static flags */
	SDIO_ClearFlag(SDIO_STATIC_FLAGS);
	
	*(pscr + 1) = ((tempscr[0] & SD_0TO7BITS) << 24) | ((tempscr[0] & SD_8TO15BITS) << 8) | ((tempscr[0] & SD_16TO23BITS) >> 8) | ((tempscr[0] & SD_24TO31BITS) >> 24);
	
	*(pscr) = ((tempscr[1] & SD_0TO7BITS) << 24) | ((tempscr[1] & SD_8TO15BITS) << 8) | ((tempscr[1] & SD_16TO23BITS) >> 8) | ((tempscr[1] & SD_24TO31BITS) >> 24);
	
	return(errorstatus);
}

/**
* @brief  Converts the number of bytes in power of two and returns the power.
* @param  NumberOfBytes: number of bytes.
* @retval None
*/
uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes)
{
	uint8_t count = 0;
	
	while (NumberOfBytes != 1)
	{
		NumberOfBytes >>= 1;
		count++;
	}
	return(count);
}

/*******************************************************************************
* Function Name  : SD_GetCapacity
* Description    : 獲取SD卡的容量
* Input          : None
* Output         : None
* Return         : u32 capacity 
*                   0： 取容量出錯 
*******************************************************************************/
uint32_t SD_GetCapacity(void)
{
    return SDCardInfo.CardCapacity;
}

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/

